Table of nuclides (combined)

**Half-lives** (example: Gd)
¹⁴⁵Gd	< 1 day
¹⁴⁶Gd	1–10 days
¹⁴⁹Gd	10–100 days
¹⁵³Gd	100d–10 years
¹⁴⁸Gd	10–10,000 years
¹⁵⁰Gd	10k–103m years
¹⁵²Gd	> 700m years
¹⁵⁸Gd	Stable
⁹⁴Nb	Border: Isomer is < 1 day
¹⁹⁸Au	Border: Isomer is 1–10 days
⁹¹Nb	Border: Isomer is 10–100 days

For an overview of available representations, see Table of nuclides. Half-Life (computer-game page here It's already listed in the disambiguation page Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun A table of nuclides or chart of nuclides is a graphic in which Nuclides are drawn such that one axis represents the number of Neutrons and the

The various tables below (scroll down) show the known isotopes of the chemical elements. Isotopes (Greek isos = "equal" tópos = "site place" are any of the different types of atoms ( Nuclides A chemical element is a type of Atom that is distinguished by its Atomic number; that is by the number of Protons in its nucleus. ^[1] They are arranged with increasing atomic numbers (proton numbers) from left to right and increasing neutron numbers from top to bottom. See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton The proton ( Greek πρῶτον / proton "first" is a Subatomic particle with an Electric charge of one positive This article is a discussion of neutrons in general For the specific case of a neutron found outside the nucleus see Free neutron.

For convenience, two different views of the data are available here: “Segmented tables,” and a single “Unitized table (all elements). ” Choose whichever one you need from the table of contents, below. The unitized table allows easy visualizion of proton/neutron-count trends but requires simultaneous horizontal and vertical scrolling. The segmented tables permit easier examination of a particular chemical element with much less scrolling. Links are provided to quickly jump between the different sections.

Note the example color legend shown at right. Legends similar to this are provided alongside each table below. Cell color denotes the half-life of each isotope. Half-Life (computer-game page here It's already listed in the disambiguation page If you’ve scrolled so a color legend is not in view, allowing your cursor to dwell over a cell will cause a pop-up text box to indicate that isotope’s half-life.

Cells with colored borders (note the three bottom cells in the color legend at right) denote the half-life of the most stable nuclear isomer state. A nuclear isomer is a Metastable state of an Atomic nucleus caused by the excitation of one or more of its Nucleons A nuclear isomer occupies The color of the border and the associated half-life of the isomer follow the same convention used for isotope half-lives (white, pink, yellow…). In most cases, a cell’s border is different from that of the cell itself. In some cases however—as with the ¹⁹⁸Au cell shown here—a cell and its border are the same color so the border’s presence is denoted with a dotted margin. If a cell has a colored border, information on the isomer’s half-life is included in the pop-up text box when your cursor dwells over the cell.

To learn more about nuclides and to obtain a quick tutorial on the distinction between isotopes, isotones, and isobars, see Table of nuclides. A nuclide (from lat nucleus is a species of Atom characterized by the constitution of its nucleus and hence by the number of Protons, the number of Isotopes (Greek isos = "equal" tópos = "site place" are any of the different types of atoms ( Nuclides This article is about a concept in nuclear physics For biochemistry see Isotonic. A table of nuclides or chart of nuclides is a graphic in which Nuclides are drawn such that one axis represents the number of Neutrons and the

1 Periodic table
2 Segmented table
3 Unitized table (all elements)
4 References
5 External links

Periodic table

This is a pictorial periodic chart to assist in choosing the desired table from Contents above. The periodic table of the chemical elements is a tabular method of displaying the Chemical elements Although precursors to this table exist its invention is Clicking on this chart takes you to a larger image; it does not link to sections below.

Segmented table

Isotopes for elements 0-14

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**Half-lives** (example: Gd)
¹⁴⁵Gd	< 1 day
¹⁴⁶Gd	1–10 days
¹⁴⁹Gd	10–100 days
¹⁵³Gd	100d–10 years
¹⁴⁸Gd	10–10,000 years
¹⁵⁰Gd	10k–103m years
¹⁵²Gd	> 700m years
¹⁵⁸Gd	Stable

Z →	0	1	2
n ↓	n	H	He	3	4
0		¹H	²He	Li	Be	5	6
1	¹n	²H	³He	⁴Li	⁵Be	B	C	7
2	²n	³H	⁴He	⁵Li	⁶Be	⁷B	⁸C	N	8
3		⁴H	⁵He	⁶Li	⁷Be	⁸B	⁹C	¹⁰N	O	9
4	⁴n	⁵H	⁶He	⁷Li	⁸Be	⁹B	¹⁰C	¹¹N	¹²O	F	10
5		⁶H	⁷He	⁸Li	⁹Be	¹⁰B	¹¹C	¹²N	¹³O	¹⁴F	Ne	11
6		⁷H	⁸He	⁹Li	¹⁰Be	¹¹B	¹²C	¹³N	¹⁴O	¹⁵F	¹⁶Ne	Na	12
		7	⁹He	¹⁰Li	¹¹Be	¹²B	¹³C	¹⁴N	¹⁵O	¹⁶F	¹⁷Ne	¹⁸Na	Mg	13
		8	¹⁰He	¹¹Li	¹²Be	¹³B	¹⁴C	¹⁵N	¹⁶O	¹⁷F	¹⁸Ne	¹⁹Na	²⁰Mg	Al	14
			9	¹²Li	¹³Be	¹⁴B	¹⁵C	¹⁶N	¹⁷O	¹⁸F	¹⁹Ne	²⁰Na	²¹Mg	²²Al	Si
				10	¹⁴Be	¹⁵B	¹⁶C	¹⁷N	¹⁸O	¹⁹F	²⁰Ne	²¹Na	²²Mg	²³Al	²⁴Si
					11	¹⁶B	¹⁷C	¹⁸N	¹⁹O	²⁰F	²¹Ne	²²Na	²³Mg	²⁴Al	²⁵Si
						12	¹⁸C	¹⁹N	²⁰O	²¹F	²²Ne	²³Na	²⁴Mg	²⁵Al	²⁶Si
							13	²⁰N	²¹O	²²F	²³Ne	²⁴Na	²⁵Mg	²⁶Al	²⁷Si
								14	²²O	²³F	²⁴Ne	²⁵Na	²⁶Mg	²⁷Al	²⁸Si
									15	²⁴F	²⁵Ne	²⁶Na	²⁷Mg	²⁸Al	²⁹Si
										16	²⁶Ne	²⁷Na	²⁸Mg	²⁹Al	³⁰Si
											17	²⁸Na	²⁹Mg	³⁰Al	³¹Si
												18	³⁰Mg	³¹Al	³²Si
													19	³²Al	³³Si
														20	³⁴Si

Isotopes for elements 15-29

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**Half-lives** (example: Gd)
¹⁴⁵Gd	< 1 day
¹⁴⁶Gd	1–10 days
¹⁴⁹Gd	10–100 days
¹⁵³Gd	100d–10 years
¹⁴⁸Gd	10–10,000 years
¹⁵⁰Gd	10k–103m years
¹⁵²Gd	> 700m years
¹⁵⁸Gd	Stable

Z →	15
n ↓	P	16
11	²⁶P	S	17
12	²⁷P		Cl	18
13	²⁸P	²⁹S		Ar	19
14	²⁹P	³⁰S	³¹Cl		K	20
15	³⁰P	³¹S	³²Cl	³³Ar		Ca
16	³¹P	³²S	³³Cl	³⁴Ar	³⁵K		21
17	³²P	³³S	³⁴Cl	³⁵Ar	³⁶K	³⁷Ca	Sc	22
18	³³P	³⁴S	³⁵Cl	³⁶Ar	³⁷K	³⁸Ca		Ti	23
19	³⁴P	³⁵S	³⁶Cl	³⁷Ar	³⁸K	³⁹Ca	⁴⁰Sc	⁴¹Ti	V	24
20	³⁵P	³⁶S	³⁷Cl	³⁸Ar	³⁹K	⁴⁰Ca	⁴¹Sc	⁴²Ti		Cr	25
21	³⁶P	³⁷S	³⁸Cl	³⁹Ar	⁴⁰K	⁴¹Ca	⁴²Sc	⁴³Ti	⁴⁴V	⁴⁵Cr	Mn	26
	22	³⁸S	³⁹Cl	⁴⁰Ar	⁴¹K	⁴²Ca	⁴³Sc	⁴⁴Ti	⁴⁵V	⁴⁶Cr		Fe	27
		23	⁴⁰Cl	⁴¹Ar	⁴²K	⁴³Ca	⁴⁴Sc	⁴⁵Ti	⁴⁶V	⁴⁷Cr	⁴⁸Mn	⁴⁹Fe	Co	28
		24	⁴¹Cl	⁴²Ar	⁴³K	⁴⁴Ca	⁴⁵Sc	⁴⁶Ti	⁴⁷V	⁴⁸Cr	⁴⁹Mn	⁵⁰Fe	⁵¹Co	Ni	29
		25	⁴²Cl	⁴³Ar	⁴⁴K	⁴⁵Ca	⁴⁶Sc	⁴⁷Ti	⁴⁸V	⁴⁹Cr	⁵⁰Mn	⁵¹Fe	⁵²Co	⁵³Ni	Cu
		26	⁴³Cl	⁴⁴Ar	⁴⁵K	⁴⁶Ca	⁴⁷Sc	⁴⁸Ti	⁴⁹V	⁵⁰Cr	⁵¹Mn	⁵²Fe	⁵³Co	⁵⁴Ni	⁵⁵Cu
		27	⁴⁴Cl	⁴⁵Ar	⁴⁶K	⁴⁷Ca	⁴⁸Sc	⁴⁹Ti	⁵⁰V	⁵¹Cr	⁵²Mn	⁵³Fe	⁵⁴Co	⁵⁵Ni	⁵⁶Cu
			28	⁴⁶Ar	⁴⁷K	⁴⁸Ca	⁴⁹Sc	⁵⁰Ti	⁵¹V	⁵²Cr	⁵³Mn	⁵⁴Fe	⁵⁵Co	⁵⁶Ni	⁵⁷Cu
				29	⁴⁸K	⁴⁹Ca	⁵⁰Sc	⁵¹Ti	⁵²V	⁵³Cr	⁵⁴Mn	⁵⁵Fe	⁵⁶Co	⁵⁷Ni	⁵⁸Cu
					30	⁵⁰Ca	⁵¹Sc	⁵²Ti	⁵³V	⁵⁴Cr	⁵⁵Mn	⁵⁶Fe	⁵⁷Co	⁵⁸Ni	⁵⁹Cu
						31		⁵³Ti	⁵⁴V	⁵⁵Cr	⁵⁶Mn	⁵⁷Fe	⁵⁸Co	⁵⁹Ni	⁶⁰Cu
							32		⁵⁵V	⁵⁶Cr	⁵⁷Mn	⁵⁸Fe	⁵⁹Co	⁶⁰Ni	⁶¹Cu
								33		⁵⁷Cr	⁵⁸Mn	⁵⁹Fe	⁶⁰Co	⁶¹Ni	⁶²Cu
									34		⁵⁹Mn	⁶⁰Fe	⁶¹Co	⁶²Ni	⁶³Cu
										35		⁶¹Fe	⁶²Co	⁶³Ni	⁶⁴Cu
										36		⁶²Fe	⁶³Co	⁶⁴Ni	⁶⁵Cu
											37		⁶⁴Co	⁶⁵Ni	⁶⁶Cu
												38		⁶⁶Ni	⁶⁷Cu
												39		⁶⁷Ni	⁶⁸Cu
												40		⁶⁸Ni	⁶⁹Cu
													41		⁷⁰Cu

Isotopes for elements 30-44

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**Half-lives** (example: Gd)
¹⁴⁵Gd	< 1 day
¹⁴⁶Gd	1–10 days
¹⁴⁹Gd	10–100 days
¹⁵³Gd	100d–10 years
¹⁴⁸Gd	10–10,000 years
¹⁵⁰Gd	10k–103m years
¹⁵²Gd	> 700m years
¹⁵⁸Gd	Stable

Z →	30
n ↓	Zn
27	⁵⁷Zn
28	⁵⁸Zn
29	⁵⁹Zn
30	⁶⁰Zn
31	⁶¹Zn	31
32	⁶²Zn	Ga	32
33	⁶³Zn	⁶⁴Ga	Ge	33
34	⁶⁴Zn	⁶⁵Ga	⁶⁶Ge	As
35	⁶⁵Zn	⁶⁶Ga	⁶⁷Ge	⁶⁸As	34
36	⁶⁶Zn	⁶⁷Ga	⁶⁸Ge	⁶⁹As	Se
37	⁶⁷Zn	⁶⁸Ga	⁶⁹Ge	⁷⁰As	⁷¹Se	35
38	⁶⁸Zn	⁶⁹Ga	⁷⁰Ge	⁷¹As	⁷²Se	Br	36
39	⁶⁹Zn	⁷⁰Ga	⁷¹Ge	⁷²As	⁷³Se	⁷⁴Br	Kr	37
40	⁷⁰Zn	⁷¹Ga	⁷²Ge	⁷³As	⁷⁴Se	⁷⁵Br	⁷⁶Kr	Rb	38
41	⁷¹Zn	⁷²Ga	⁷³Ge	⁷⁴As	⁷⁵Se	⁷⁶Br	⁷⁷Kr	⁷⁸Rb	Sr	39
42	⁷²Zn	⁷³Ga	⁷⁴Ge	⁷⁵As	⁷⁶Se	⁷⁷Br	⁷⁸Kr	⁷⁹Rb	⁸⁰Sr	Y	40
43	⁷³Zn	⁷⁴Ga	⁷⁵Ge	⁷⁶As	⁷⁷Se	⁷⁸Br	⁷⁹Kr	⁸⁰Rb	⁸¹Sr	⁸²Y	Zr	41
44	⁷⁴Zn	⁷⁵Ga	⁷⁶Ge	⁷⁷As	⁷⁸Se	⁷⁹Br	⁸⁰Kr	⁸¹Rb	⁸²Sr	⁸³Y	⁸⁴Zr	Nb	42
45	⁷⁵Zn	⁷⁶Ga	⁷⁷Ge	⁷⁸As	⁷⁹Se	⁸⁰Br	⁸¹Kr	⁸²Rb	⁸³Sr	⁸⁴Y	⁸⁵Zr	⁸⁶Nb	Mo	43
			46	⁷⁹As	⁸⁰Se	⁸¹Br	⁸²Kr	⁸³Rb	⁸⁴Sr	⁸⁵Y	⁸⁶Zr	⁸⁷Nb	⁸⁸Mo	Tc	44
			47	⁸⁰As	⁸¹Se	⁸²Br	⁸³Kr	⁸⁴Rb	⁸⁵Sr	⁸⁶Y	⁸⁷Zr	⁸⁸Nb	⁸⁹Mo	⁹⁰Tc	Ru
			48	⁸¹As	⁸²Se	⁸³Br	⁸⁴Kr	⁸⁵Rb	⁸⁶Sr	⁸⁷Y	⁸⁸Zr	⁸⁹Nb	⁹⁰Mo	⁹¹Tc	⁹²Ru
			49	⁸²As	⁸³Se	⁸⁴Br	⁸⁵Kr	⁸⁶Rb	⁸⁷Sr	⁸⁸Y	⁸⁹Zr	⁹⁰Nb	⁹¹Mo	⁹²Tc	⁹³Ru
			50	⁸³As	⁸⁴Se	⁸⁵Br	⁸⁶Kr	⁸⁷Rb	⁸⁸Sr	⁸⁹Y	⁹⁰Zr	⁹¹Nb	⁹²Mo	⁹³Tc	⁹⁴Ru
				51	⁸⁵Se	⁸⁶Br	⁸⁷Kr	⁸⁸Rb	⁸⁹Sr	⁹⁰Y	⁹¹Zr	⁹²Nb	⁹³Mo	⁹⁴Tc	⁹⁵Ru
					52	⁸⁷Br	⁸⁸Kr	⁸⁹Rb	⁹⁰Sr	⁹¹Y	⁹²Zr	⁹³Nb	⁹⁴Mo	⁹⁵Tc	⁹⁶Ru
						53	⁸⁹Kr	⁹⁰Rb	⁹¹Sr	⁹²Y	⁹³Zr	⁹⁴Nb	⁹⁵Mo	⁹⁶Tc	⁹⁷Ru
							54	⁹¹Rb	⁹²Sr	⁹³Y	⁹⁴Zr	⁹⁵Nb	⁹⁶Mo	⁹⁷Tc	⁹⁸Ru
								55	⁹³Sr	⁹⁴Y	⁹⁵Zr	⁹⁶Nb	⁹⁷Mo	⁹⁸Tc	⁹⁹Ru
									56	⁹⁵Y	⁹⁶Zr	⁹⁷Nb	⁹⁸Mo	⁹⁹Tc	¹⁰⁰Ru
									57	⁹⁶Y	⁹⁷Zr	⁹⁸Nb	⁹⁹Mo	¹⁰⁰Tc	¹⁰¹Ru
									58	⁹⁷Y	⁹⁸Zr	⁹⁹Nb	¹⁰⁰Mo	¹⁰¹Tc	¹⁰²Ru
									59	⁹⁸Y	⁹⁹Zr	¹⁰⁰Nb	¹⁰¹Mo	¹⁰²Tc	¹⁰³Ru
									60	⁹⁹Y	¹⁰⁰Zr	¹⁰¹Nb	¹⁰²Mo	¹⁰³Tc	¹⁰⁴Ru
									61	¹⁰⁰Y	¹⁰¹Zr	¹⁰²Nb	¹⁰³Mo	¹⁰⁴Tc	¹⁰⁵Ru
										62	¹⁰²Zr	¹⁰³Nb	¹⁰⁴Mo	¹⁰⁵Tc	¹⁰⁶Ru
											63	¹⁰⁴Nb	¹⁰⁵Mo	¹⁰⁶Tc	¹⁰⁷Ru
												64	¹⁰⁶Mo	¹⁰⁷Tc	¹⁰⁸Ru
													65	¹⁰⁸Tc	¹⁰⁹Ru
														66	¹¹⁰Ru

Isotopes for elements 45-59

← Previous | Next →Go to Unitized table (all elements)Go to Periodic table

**Half-lives** (example: Gd)
¹⁴⁵Gd	< 1 day
¹⁴⁶Gd	1–10 days
¹⁴⁹Gd	10–100 days
¹⁵³Gd	100d–10 years
¹⁴⁸Gd	10–10,000 years
¹⁵⁰Gd	10k–103m years
¹⁵²Gd	> 700m years
¹⁵⁸Gd	Stable

Z →	45
n ↓	Rh	46
49		Pd	47
50	⁹⁵Rh		Ag	48
51	⁹⁶Rh	⁹⁷Pd		Cd
52	⁹⁷Rh	⁹⁸Pd	⁹⁹Ag	¹⁰⁰Cd	49
53	⁹⁸Rh	⁹⁹Pd	¹⁰⁰Ag	¹⁰¹Cd	In	50
54	⁹⁹Rh	¹⁰⁰Pd	¹⁰¹Ag	¹⁰²Cd		Sn	51
55	¹⁰⁰Rh	¹⁰¹Pd	¹⁰²Ag	¹⁰³Cd	¹⁰⁴In		Sb	52
56	¹⁰¹Rh	¹⁰²Pd	¹⁰³Ag	¹⁰⁴Cd				Te	53
57	¹⁰²Rh	¹⁰³Pd	¹⁰⁴Ag	¹⁰⁵Cd	¹⁰⁶In	¹⁰⁷Sn		¹⁰⁹Te	I	54
58	¹⁰³Rh	¹⁰⁴Pd	¹⁰⁵Ag	¹⁰⁶Cd	¹⁰⁷In	¹⁰⁸Sn				Xe	55
59	¹⁰⁴Rh	¹⁰⁵Pd	¹⁰⁶Ag	¹⁰⁷Cd	¹⁰⁸In	¹⁰⁹Sn	¹¹⁰Sb	¹¹¹Te		¹¹³Xe	Cs
60	¹⁰⁵Rh	¹⁰⁶Pd	¹⁰⁷Ag	¹⁰⁸Cd	¹⁰⁹In	¹¹⁰Sn	¹¹¹Sb	¹¹²Te				56
61	¹⁰⁶Rh	¹⁰⁷Pd	¹⁰⁸Ag	¹⁰⁹Cd	¹¹⁰In	¹¹¹Sn	¹¹²Sb	¹¹³Te		¹¹⁵Xe	¹¹⁶Cs	Ba
62	¹⁰⁷Rh	¹⁰⁸Pd	¹⁰⁹Ag	¹¹⁰Cd	¹¹¹In	¹¹²Sn	¹¹³Sb	¹¹⁴Te	¹¹⁵I	¹¹⁶Xe	¹¹⁷Cs
63	¹⁰⁸Rh	¹⁰⁹Pd	¹¹⁰Ag	¹¹¹Cd	¹¹²In	¹¹³Sn	¹¹⁴Sb	¹¹⁵Te	¹¹⁶I	¹¹⁷Xe	¹¹⁸Cs	¹¹⁹Ba	57
64	¹⁰⁹Rh	¹¹⁰Pd	¹¹¹Ag	¹¹²Cd	¹¹³In	¹¹⁴Sn	¹¹⁵Sb	¹¹⁶Te	¹¹⁷I	¹¹⁸Xe	¹¹⁹Cs		La
65	¹¹⁰Rh	¹¹¹Pd	¹¹²Ag	¹¹³Cd	¹¹⁴In	¹¹⁵Sn	¹¹⁶Sb	¹¹⁷Te	¹¹⁸I	¹¹⁹Xe	¹²⁰Cs	¹²¹Ba
66	¹¹¹Rh	¹¹²Pd	¹¹³Ag	¹¹⁴Cd	¹¹⁵In	¹¹⁶Sn	¹¹⁷Sb	¹¹⁸Te	¹¹⁹I	¹²⁰Xe	¹²¹Cs	¹²²Ba
67	¹¹²Rh	¹¹³Pd	¹¹⁴Ag	¹¹⁵Cd	¹¹⁶In	¹¹⁷Sn	¹¹⁸Sb	¹¹⁹Te	¹²⁰I	¹²¹Xe	¹²²Cs	¹²³Ba		58
	68	¹¹⁴Pd	¹¹⁵Ag	¹¹⁶Cd	¹¹⁷In	¹¹⁸Sn	¹¹⁹Sb	¹²⁰Te	¹²¹I	¹²²Xe	¹²³Cs	¹²⁴Ba	¹²⁵La	Ce
		69	¹¹⁶Ag	¹¹⁷Cd	¹¹⁸In	¹¹⁹Sn	¹²⁰Sb	¹²¹Te	¹²²I	¹²³Xe	¹²⁴Cs	¹²⁵Ba	¹²⁶La
		70	¹¹⁷Ag	¹¹⁸Cd	¹¹⁹In	¹²⁰Sn	¹²¹Sb	¹²²Te	¹²³I	¹²⁴Xe	¹²⁵Cs	¹²⁶Ba	¹²⁷La		59
		71	¹¹⁸Ag	¹¹⁹Cd	¹²⁰In	¹²¹Sn	¹²²Sb	¹²³Te	¹²⁴I	¹²⁵Xe	¹²⁶Cs	¹²⁷Ba	¹²⁸La	¹²⁹Ce	Pr
		72	¹¹⁹Ag	¹²⁰Cd	¹²¹In	¹²²Sn	¹²³Sb	¹²⁴Te	¹²⁵I	¹²⁶Xe	¹²⁷Cs	¹²⁸Ba	¹²⁹La	¹³⁰Ce
		73	¹²⁰Ag	¹²¹Cd	¹²²In	¹²³Sn	¹²⁴Sb	¹²⁵Te	¹²⁶I	¹²⁷Xe	¹²⁸Cs	¹²⁹Ba	¹³⁰La	¹³¹Ce	¹³²Pr
		74	¹²¹Ag	¹²²Cd	¹²³In	¹²⁴Sn	¹²⁵Sb	¹²⁶Te	¹²⁷I	¹²⁸Xe	¹²⁹Cs	¹³⁰Ba	¹³¹La	¹³²Ce	¹³³Pr
		75	¹²²Ag	¹²³Cd	¹²⁴In	¹²⁵Sn	¹²⁶Sb	¹²⁷Te	¹²⁸I	¹²⁹Xe	¹³⁰Cs	¹³¹Ba	¹³²La	¹³³Ce	¹³⁴Pr
		76	¹²³Ag	¹²⁴Cd	¹²⁵In	¹²⁶Sn	¹²⁷Sb	¹²⁸Te	¹²⁹I	¹³⁰Xe	¹³¹Cs	¹³²Ba	¹³³La	¹³⁴Ce	¹³⁵Pr
			77	¹²⁵Cd	¹²⁶In	¹²⁷Sn	¹²⁸Sb	¹²⁹Te	¹³⁰I	¹³¹Xe	¹³²Cs	¹³³Ba	¹³⁴La	¹³⁵Ce	¹³⁶Pr
				78	¹²⁷In	¹²⁸Sn	¹²⁹Sb	¹³⁰Te	¹³¹I	¹³²Xe	¹³³Cs	¹³⁴Ba	¹³⁵La	¹³⁶Ce	¹³⁷Pr
					79	¹²⁹Sn	¹³⁰Sb	¹³¹Te	¹³²I	¹³³Xe	¹³⁴Cs	¹³⁵Ba	¹³⁶La	¹³⁷Ce	¹³⁸Pr
					80	¹³⁰Sn	¹³¹Sb	¹³²Te	¹³³I	¹³⁴Xe	¹³⁵Cs	¹³⁶Ba	¹³⁷La	¹³⁸Ce	¹³⁹Pr
					81	¹³¹Sn	¹³²Sb	¹³³Te	¹³⁴I	¹³⁵Xe	¹³⁶Cs	¹³⁷Ba	¹³⁸La	¹³⁹Ce	¹⁴⁰Pr
					82	¹³²Sn	¹³³Sb	¹³⁴Te	¹³⁵I	¹³⁶Xe	¹³⁷Cs	¹³⁸Ba	¹³⁹La	¹⁴⁰Ce	¹⁴¹Pr
					83	¹³³Sn	¹³⁴Sb	¹³⁵Te	¹³⁶I	¹³⁷Xe	¹³⁸Cs	¹³⁹Ba	¹⁴⁰La	¹⁴¹Ce	¹⁴²Pr
					84	¹³⁴Sn	¹³⁵Sb	¹³⁶Te	¹³⁷I	¹³⁸Xe	¹³⁹Cs	¹⁴⁰Ba	¹⁴¹La	¹⁴²Ce	¹⁴³Pr
						85	¹³⁶Sb	¹³⁷Te	¹³⁸I	¹³⁹Xe	¹⁴⁰Cs	¹⁴¹Ba	¹⁴²La	¹⁴³Ce	¹⁴⁴Pr
							86	¹³⁸Te	¹³⁹I	¹⁴⁰Xe	¹⁴¹Cs	¹⁴²Ba	¹⁴³La	¹⁴⁴Ce	¹⁴⁵Pr
								87	¹⁴⁰I	¹⁴¹Xe	¹⁴²Cs	¹⁴³Ba	¹⁴⁴La	¹⁴⁵Ce	¹⁴⁶Pr
									88	¹⁴²Xe	¹⁴³Cs	¹⁴⁴Ba	¹⁴⁵La	¹⁴⁶Ce	¹⁴⁷Pr
										89	¹⁴⁴Cs	¹⁴⁵Ba	¹⁴⁶La	¹⁴⁷Ce	¹⁴⁸Pr
											90	¹⁴⁶Ba	¹⁴⁷La	¹⁴⁸Ce	¹⁴⁹Pr
												91	¹⁴⁸La	¹⁴⁹Ce	¹⁵⁰Pr
													92	¹⁵⁰Ce	¹⁵¹Pr

Isotopes for elements 60-74

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**Half-lives** (example: Gd)
¹⁴⁵Gd	< 1 day
¹⁴⁶Gd	1–10 days
¹⁴⁹Gd	10–100 days
¹⁵³Gd	100d–10 years
¹⁴⁸Gd	10–10,000 years
¹⁵⁰Gd	10k–103m years
¹⁵²Gd	> 700m years
¹⁵⁸Gd	Stable

Z →	60
n ↓	Nd
73		61	62	63
74	¹³⁴Nd	Pm	Sm	Eu
75	¹³⁵Nd		¹³⁷Sm		64
76	¹³⁶Nd	¹³⁷Pm	¹³⁸Sm	¹³⁹Eu	Gd
77	¹³⁷Nd	¹³⁸Pm	¹³⁹Sm	¹⁴⁰Eu
78	¹³⁸Nd	¹³⁹Pm	¹⁴⁰Sm	¹⁴¹Eu	¹⁴²Gd
79	¹³⁹Nd	¹⁴⁰Pm	¹⁴¹Sm	¹⁴²Eu	¹⁴³Gd	65	66	67	68	69
80	¹⁴⁰Nd	¹⁴¹Pm	¹⁴²Sm	¹⁴³Eu	¹⁴⁴Gd	Tb	Dy	Ho	Er	Tm	70
81	¹⁴¹Nd	¹⁴²Pm	¹⁴³Sm	¹⁴⁴Eu	¹⁴⁵Gd	¹⁴⁶Tb	¹⁴⁷Dy				Yb	71
82	¹⁴²Nd	¹⁴³Pm	¹⁴⁴Sm	¹⁴⁵Eu	¹⁴⁶Gd	¹⁴⁷Tb	¹⁴⁸Dy		¹⁵⁰Er	¹⁵¹Tm		Lu
83	¹⁴³Nd	¹⁴⁴Pm	¹⁴⁵Sm	¹⁴⁶Eu	¹⁴⁷Gd	¹⁴⁸Tb	¹⁴⁹Dy	¹⁵⁰Ho	¹⁵¹Er
84	¹⁴⁴Nd	¹⁴⁵Pm	¹⁴⁶Sm	¹⁴⁷Eu	¹⁴⁸Gd	¹⁴⁹Tb	¹⁵⁰Dy	¹⁵¹Ho	¹⁵²Er	¹⁵³Tm	¹⁵⁴Yb	¹⁵⁵Lu
85	¹⁴⁵Nd	¹⁴⁶Pm	¹⁴⁷Sm	¹⁴⁸Eu	¹⁴⁹Gd	¹⁵⁰Tb	¹⁵¹Dy	¹⁵²Ho	¹⁵³Er	¹⁵⁴Tm	¹⁵⁵Yb	¹⁵⁶Lu
86	¹⁴⁶Nd	¹⁴⁷Pm	¹⁴⁸Sm	¹⁴⁹Eu	¹⁵⁰Gd	¹⁵¹Tb	¹⁵²Dy	¹⁵³Ho	¹⁵⁴Er	¹⁵⁵Tm	¹⁵⁶Yb
87	¹⁴⁷Nd	¹⁴⁸Pm	¹⁴⁹Sm	¹⁵⁰Eu	¹⁵¹Gd	¹⁵²Tb	¹⁵³Dy	¹⁵⁴Ho	¹⁵⁵Er	¹⁵⁶Tm	¹⁵⁷Yb
88	¹⁴⁸Nd	¹⁴⁹Pm	¹⁵⁰Sm	¹⁵¹Eu	¹⁵²Gd	¹⁵³Tb	¹⁵⁴Dy	¹⁵⁵Ho	¹⁵⁶Er	¹⁵⁷Tm	¹⁵⁸Yb
89	¹⁴⁹Nd	¹⁵⁰Pm	¹⁵¹Sm	¹⁵²Eu	¹⁵³Gd	¹⁵⁴Tb	¹⁵⁵Dy	¹⁵⁶Ho	¹⁵⁷Er	¹⁵⁸Tm
90	¹⁵⁰Nd	¹⁵¹Pm	¹⁵²Sm	¹⁵³Eu	¹⁵⁴Gd	¹⁵⁵Tb	¹⁵⁶Dy	¹⁵⁷Ho	¹⁵⁸Er	¹⁵⁹Tm	¹⁶⁰Yb	¹⁶¹Lu
91	¹⁵¹Nd	¹⁵²Pm	¹⁵³Sm	¹⁵⁴Eu	¹⁵⁵Gd	¹⁵⁶Tb	¹⁵⁷Dy	¹⁵⁸Ho	¹⁵⁹Er	¹⁶⁰Tm	¹⁶¹Yb	¹⁶²Lu
92	¹⁵²Nd	¹⁵³Pm	¹⁵⁴Sm	¹⁵⁵Eu	¹⁵⁶Gd	¹⁵⁷Tb	¹⁵⁸Dy	¹⁵⁹Ho	¹⁶⁰Er	¹⁶¹Tm	¹⁶²Yb
93		¹⁵⁴Pm	¹⁵⁵Sm	¹⁵⁶Eu	¹⁵⁷Gd	¹⁵⁸Tb	¹⁵⁹Dy	¹⁶⁰Ho	¹⁶¹Er	¹⁶²Tm	¹⁶³Yb	¹⁶⁴Lu
94	¹⁵⁴Nd		¹⁵⁶Sm	¹⁵⁷Eu	¹⁵⁸Gd	¹⁵⁹Tb	¹⁶⁰Dy	¹⁶¹Ho	¹⁶²Er	¹⁶³Tm	¹⁶⁴Yb	¹⁶⁵Lu	72	73	74
	95		¹⁵⁷Sm	¹⁵⁸Eu	¹⁵⁹Gd	¹⁶⁰Tb	¹⁶¹Dy	¹⁶²Ho	¹⁶³Er	¹⁶⁴Tm	¹⁶⁵Yb	¹⁶⁶Lu	Hf	Ta	W
		96		¹⁵⁹Eu	¹⁶⁰Gd	¹⁶¹Tb	¹⁶²Dy	¹⁶³Ho	¹⁶⁴Er	¹⁶⁵Tm	¹⁶⁶Yb	¹⁶⁷Lu	¹⁶⁸Hf	¹⁶⁹Ta	¹⁷⁰W
		97		¹⁶⁰Eu	¹⁶¹Gd	¹⁶²Tb	¹⁶³Dy	¹⁶⁴Ho	¹⁶⁵Er	¹⁶⁶Tm	¹⁶⁷Yb	¹⁶⁸Lu	¹⁶⁹Hf	¹⁷⁰Ta	¹⁷¹W
			98		¹⁶²Gd	¹⁶³Tb	¹⁶⁴Dy	¹⁶⁵Ho	¹⁶⁶Er	¹⁶⁷Tm	¹⁶⁸Yb	¹⁶⁹Lu	¹⁷⁰Hf	¹⁷¹Ta	¹⁷²W
				99		¹⁶⁴Tb	¹⁶⁵Dy	¹⁶⁶Ho	¹⁶⁷Er	¹⁶⁸Tm	¹⁶⁹Yb	¹⁷⁰Lu	¹⁷¹Hf	¹⁷²Ta	¹⁷³W
					100		¹⁶⁶Dy	¹⁶⁷Ho	¹⁶⁸Er	¹⁶⁹Tm	¹⁷⁰Yb	¹⁷¹Lu	¹⁷²Hf	¹⁷³Ta	¹⁷⁴W
					101		¹⁶⁷Dy	¹⁶⁸Ho	¹⁶⁹Er	¹⁷⁰Tm	¹⁷¹Yb	¹⁷²Lu	¹⁷³Hf	¹⁷⁴Ta	¹⁷⁵W
						102		¹⁶⁹Ho	¹⁷⁰Er	¹⁷¹Tm	¹⁷²Yb	¹⁷³Lu	¹⁷⁴Hf	¹⁷⁵Ta	¹⁷⁶W
						103		¹⁷⁰Ho	¹⁷¹Er	¹⁷²Tm	¹⁷³Yb	¹⁷⁴Lu	¹⁷⁵Hf	¹⁷⁶Ta	¹⁷⁷W
							104		¹⁷²Er	¹⁷³Tm	¹⁷⁴Yb	¹⁷⁵Lu	¹⁷⁶Hf	¹⁷⁷Ta	¹⁷⁸W
							105		¹⁷³Er	¹⁷⁴Tm	¹⁷⁵Yb	¹⁷⁶Lu	¹⁷⁷Hf	¹⁷⁸Ta	¹⁷⁹W
								106		¹⁷⁵Tm	¹⁷⁶Yb	¹⁷⁷Lu	¹⁷⁸Hf	¹⁷⁹Ta	¹⁸⁰W
								107		¹⁷⁶Tm	¹⁷⁷Yb	¹⁷⁸Lu	¹⁷⁹Hf	¹⁸⁰Ta	¹⁸¹W
									108		¹⁷⁸Yb	¹⁷⁹Lu	¹⁸⁰Hf	¹⁸¹Ta	¹⁸²W
										109		¹⁸⁰Lu	¹⁸¹Hf	¹⁸²Ta	¹⁸³W
											110		¹⁸²Hf	¹⁸³Ta	¹⁸⁴W
											111		¹⁸³Hf	¹⁸⁴Ta	¹⁸⁵W
											112		¹⁸⁴Hf	¹⁸⁵Ta	¹⁸⁶W
											113		¹⁸⁵Hf	¹⁸⁶Ta	¹⁸⁷W
												114			¹⁸⁸W
													115		¹⁸⁹W
													116		¹⁹⁰W

Isotopes for elements 75-89

← Previous | Next →Go to Unitized table (all elements)Go to Periodic table

**Half-lives** (example: Gd)
¹⁴⁵Gd	< 1 day
¹⁴⁶Gd	1–10 days
¹⁴⁹Gd	10–100 days
¹⁵³Gd	100d–10 years
¹⁴⁸Gd	10–10,000 years
¹⁵⁰Gd	10k–103m years
¹⁵²Gd	> 700m years
¹⁵⁸Gd	Stable

Z →	75	76	77	78	79	80
n ↓	Re	Os	Ir	Pt	Au	Hg
96		¹⁷²Os	¹⁷¹Ir	¹⁷⁴Pt	¹⁷⁵Au
97	¹⁷²Re	¹⁷³Os	¹⁷⁴Ir	¹⁷⁵Pt	¹⁷⁶Au	¹⁷⁷Hg
98		¹⁷⁴Os	¹⁷⁵Ir	¹⁷⁶Pt	¹⁷⁷Au	¹⁷⁸Hg
99	¹⁷⁴Re	¹⁷⁵Os	¹⁷⁶Ir	¹⁷⁷Pt	¹⁷⁸Au	¹⁷⁹Hg	81
100	¹⁷⁵Re	¹⁷⁶Os	¹⁷⁷Ir	¹⁷⁸Pt	¹⁷⁹Au	¹⁸⁰Hg	Tl	82
101	¹⁷⁶Re	¹⁷⁷Os	¹⁷⁸Ir	¹⁷⁹Pt		¹⁸¹Hg		Pb
102	¹⁷⁷Re	¹⁷⁸Os	¹⁷⁹Ir	¹⁸⁰Pt	¹⁸¹Au	¹⁸²Hg
103	¹⁷⁸Re	¹⁷⁹Os	¹⁸⁰Ir	¹⁸¹Pt	¹⁸²Au	¹⁸³Hg	¹⁸⁴Tl	¹⁸⁵Pb	83
104	¹⁷⁹Re	¹⁸⁰Os	¹⁸¹Ir	¹⁸²Pt	¹⁸³Au	¹⁸⁴Hg	¹⁸⁵Tl	¹⁸⁶Pb	Bi
105	¹⁸⁰Re	¹⁸¹Os	¹⁸²Ir	¹⁸³Pt	¹⁸⁴Au	¹⁸⁵Hg	¹⁸⁶Tl	¹⁸⁷Pb		84
106	¹⁸¹Re	¹⁸²Os	¹⁸³Ir	¹⁸⁴Pt	¹⁸⁵Au	¹⁸⁶Hg	¹⁸⁷Tl	¹⁸⁸Pb	¹⁸⁹Bi	Po	85
107	¹⁸²Re	¹⁸³Os	¹⁸⁴Ir	¹⁸⁵Pt	¹⁸⁶Au	¹⁸⁷Hg	¹⁸⁸Tl	¹⁸⁹Pb	¹⁹⁰Bi		At
108	¹⁸³Re	¹⁸⁴Os	¹⁸⁵Ir	¹⁸⁶Pt	¹⁸⁷Au	¹⁸⁸Hg	¹⁸⁹Tl	¹⁹⁰Pb	¹⁹¹Bi
109	¹⁸⁴Re	¹⁸⁵Os	¹⁸⁶Ir	¹⁸⁷Pt	¹⁸⁸Au	¹⁸⁹Hg	¹⁹⁰Tl	¹⁹¹Pb	¹⁹²Bi	¹⁹³Po	¹⁹⁴At
110	¹⁸⁵Re	¹⁸⁶Os	¹⁸⁷Ir	¹⁸⁸Pt	¹⁸⁹Au	¹⁹⁰Hg	¹⁹¹Tl	¹⁹²Pb	¹⁹³Bi	¹⁹⁴Po	¹⁹⁵At
111	¹⁸⁶Re	¹⁸⁷Os	¹⁸⁸Ir	¹⁸⁹Pt	¹⁹⁰Au	¹⁹¹Hg	¹⁹²Tl	¹⁹³Pb	¹⁹⁴Bi	¹⁹⁵Po	¹⁹⁶At
112	¹⁸⁷Re	¹⁸⁸Os	¹⁸⁹Ir	¹⁹⁰Pt	¹⁹¹Au	¹⁹²Hg	¹⁹³Tl	¹⁹⁴Pb	¹⁹⁵Bi	¹⁹⁶Po	¹⁹⁷At
113	¹⁸⁸Re	¹⁸⁹Os	¹⁹⁰Ir	¹⁹¹Pt	¹⁹²Au	¹⁹³Hg	¹⁹⁴Tl	¹⁹⁵Pb	¹⁹⁶Bi	¹⁹⁷Po	¹⁹⁸At
114	¹⁸⁹Re	¹⁹⁰Os	¹⁹¹Ir	¹⁹²Pt	¹⁹³Au	¹⁹⁴Hg	¹⁹⁵Tl	¹⁹⁶Pb	¹⁹⁷Bi	¹⁹⁸Po	¹⁹⁹At
115	¹⁹⁰Re	¹⁹¹Os	¹⁹²Ir	¹⁹³Pt	¹⁹⁴Au	¹⁹⁵Hg	¹⁹⁶Tl	¹⁹⁷Pb	¹⁹⁸Bi	¹⁹⁹Po	²⁰⁰At
116	¹⁹¹Re	¹⁹²Os	¹⁹³Ir	¹⁹⁴Pt	¹⁹⁵Au	¹⁹⁶Hg	¹⁹⁷Tl	¹⁹⁸Pb	¹⁹⁹Bi	²⁰⁰Po	²⁰¹At
117	¹⁹²Re	¹⁹³Os	¹⁹⁴Ir	¹⁹⁵Pt	¹⁹⁶Au	¹⁹⁷Hg	¹⁹⁸Tl	¹⁹⁹Pb	²⁰⁰Bi	²⁰¹Po	²⁰²At
118		¹⁹⁴Os	¹⁹⁵Ir	¹⁹⁶Pt	¹⁹⁷Au	¹⁹⁸Hg	¹⁹⁹Tl	²⁰⁰Pb	²⁰¹Bi	²⁰²Po	²⁰³At
119		¹⁹⁵Os	¹⁹⁶Ir	¹⁹⁷Pt	¹⁹⁸Au	¹⁹⁹Hg	²⁰⁰Tl	²⁰¹Pb	²⁰²Bi	²⁰³Po	²⁰⁴At
120		¹⁹⁶Os	¹⁹⁷Ir	¹⁹⁸Pt	¹⁹⁹Au	²⁰⁰Hg	²⁰¹Tl	²⁰²Pb	²⁰³Bi	²⁰⁴Po	²⁰⁵At
	121		¹⁹⁸Ir	¹⁹⁹Pt	²⁰⁰Au	²⁰¹Hg	²⁰²Tl	²⁰³Pb	²⁰⁴Bi	²⁰⁵Po	²⁰⁶At
		122		²⁰⁰Pt	²⁰¹Au	²⁰²Hg	²⁰³Tl	²⁰⁴Pb	²⁰⁵Bi	²⁰⁶Po	²⁰⁷At
		123		²⁰¹Pt	²⁰²Au	²⁰³Hg	²⁰⁴Tl	²⁰⁵Pb	²⁰⁶Bi	²⁰⁷Po	²⁰⁸At
			124		²⁰³Au	²⁰⁴Hg	²⁰⁵Tl	²⁰⁶Pb	²⁰⁷Bi	²⁰⁸Po	²⁰⁹At
			125		²⁰⁴Au	²⁰⁵Hg	²⁰⁶Tl	²⁰⁷Pb	²⁰⁸Bi	²⁰⁹Po	²¹⁰At	86
				126		²⁰⁶Hg	²⁰⁷Tl	²⁰⁸Pb	²⁰⁹Bi	²¹⁰Po	²¹¹At	Rn	87
					127		²⁰⁸Tl	²⁰⁹Pb	²¹⁰Bi	²¹¹Po	²¹²At	²¹³Rn	Fr	88
					128		²⁰⁹Tl	²¹⁰Pb	²¹¹Bi	²¹²Po	²¹³At	²¹⁴Rn	²¹⁵Fr	Ra	89
					129		²¹⁰Tl	²¹¹Pb	²¹²Bi	²¹³Po	²¹⁴At	²¹⁵Rn	²¹⁶Fr	²¹⁷Ra	Ac
						130		²¹²Pb	²¹³Bi	²¹⁴Po	²¹⁵At	²¹⁶Rn	²¹⁷Fr	²¹⁸Ra	²¹⁹Ac
						131		²¹³Pb	²¹⁴Bi	²¹⁵Po	²¹⁶At	²¹⁷Rn	²¹⁸Fr	²¹⁹Ra	²²⁰Ac
						132		²¹⁴Pb	²¹⁵Bi	²¹⁶Po	²¹⁷At	²¹⁸Rn	²¹⁹Fr	²²⁰Ra	²²¹Ac
							133			²¹⁷Po	²¹⁸At	²¹⁹Rn	²²⁰Fr	²²¹Ra	²²²Ac
								134		²¹⁸Po	²¹⁹At	²²⁰Rn	²²¹Fr	²²²Ra	²²³Ac
									135		²²⁰At	²²¹Rn	²²²Fr	²²³Ra	²²⁴Ac
									136		²²¹At	²²²Rn	²²³Fr	²²⁴Ra	²²⁵Ac
										137		²²³Rn	²²⁴Fr	²²⁵Ra	²²⁶Ac
										138		²²⁴Rn	²²⁵Fr	²²⁶Ra	²²⁷Ac
										139		²²⁵Rn	²²⁶Fr	²²⁷Ra	²²⁸Ac
										140		²²⁶Rn	²²⁷Fr	²²⁸Ra	²²⁹Ac
											141		²²⁸Fr	²²⁹Ra	²³⁰Ac
											142		²²⁹Fr	²³⁰Ra	²³¹Ac
												143			²³²Ac

Isotopes for elements 90-104

← Previous | Next →Go to Unitized table (all elements)Go to Periodic table

**Half-lives** (example: Gd)
¹⁴⁵Gd	< 1 day
¹⁴⁶Gd	1–10 days
¹⁴⁹Gd	10–100 days
¹⁵³Gd	100d–10 years
¹⁴⁸Gd	10–10,000 years
¹⁵⁰Gd	10k–103m years
¹⁵²Gd	> 700m years
¹⁵⁸Gd	Stable

Z →	90
n ↓	Th	91
131	²²¹Th	Pa	92
132	²²²Th	²²³Pa	U	93
133	²²³Th	²²⁴Pa		Np	94
134	²²⁴Th	²²⁵Pa	²²⁶U		Pu	95
135	²²⁵Th	²²⁶Pa	²²⁷U	²²⁸Np		Am
136	²²⁶Th	²²⁷Pa	²²⁸U	²²⁹Np			96
137	²²⁷Th	²²⁸Pa	²²⁹U	²³⁰Np		²³²Am	Cm
138	²²⁸Th	²²⁹Pa	²³⁰U	²³¹Np	²³²Pu
139	²²⁹Th	²³⁰Pa	²³¹U	²³²Np	²³³Pu	²³⁴Am		97	98	99	100
140	²³⁰Th	²³¹Pa	²³²U	²³³Np	²³⁴Pu	²³⁵Am	²³⁶Cm	Bk	Cf	Es	Fm
141	²³¹Th	²³²Pa	²³³U	²³⁴Np	²³⁵Pu	²³⁶Am	²³⁷Cm
142	²³²Th	²³³Pa	²³⁴U	²³⁵Np	²³⁶Pu	²³⁷Am	²³⁸Cm	²³⁹Bk	²⁴⁰Cf	²⁴¹Es	²⁴²Fm
143	²³³Th	²³⁴Pa	²³⁵U	²³⁶Np	²³⁷Pu	²³⁸Am	²³⁹Cm	²⁴⁰Bk	²⁴¹Cf	²⁴²Es	²⁴³Fm
144	²³⁴Th	²³⁵Pa	²³⁶U	²³⁷Np	²³⁸Pu	²³⁹Am	²⁴⁰Cm	²⁴¹Bk	²⁴²Cf	²⁴³Es	²⁴⁴Fm	101
145	²³⁵Th	²³⁶Pa	²³⁷U	²³⁸Np	²³⁹Pu	²⁴⁰Am	²⁴¹Cm	²⁴²Bk	²⁴³Cf	²⁴⁴Es	²⁴⁵Fm	Md	102
146	²³⁶Th	²³⁷Pa	²³⁸U	²³⁹Np	²⁴⁰Pu	²⁴¹Am	²⁴²Cm	²⁴³Bk	²⁴⁴Cf	²⁴⁵Es	²⁴⁶Fm		No	103	104
147	²³⁷Th	²³⁸Pa	²³⁹U	²⁴⁰Np	²⁴¹Pu	²⁴²Am	²⁴³Cm	²⁴⁴Bk	²⁴⁵Cf	²⁴⁶Es	²⁴⁷Fm	²⁴⁸Md		Lr	Rf
148	²³⁸Th	²³⁹Pa	²⁴⁰U	²⁴¹Np	²⁴²Pu	²⁴³Am	²⁴⁴Cm	²⁴⁵Bk	²⁴⁶Cf	²⁴⁷Es	²⁴⁸Fm	²⁴⁹Md	²⁵⁰No
149		²⁴⁰Pa	²⁴¹U	²⁴²Np	²⁴³Pu	²⁴⁴Am	²⁴⁵Cm	²⁴⁶Bk	²⁴⁷Cf	²⁴⁸Es	²⁴⁹Fm	²⁵⁰Md	²⁵¹No	²⁵²Lr	²⁵³Rf
	150		²⁴²U	²⁴³Np	²⁴⁴Pu	²⁴⁵Am	²⁴⁶Cm	²⁴⁷Bk	²⁴⁸Cf	²⁴⁹Es	²⁵⁰Fm	²⁵¹Md	²⁵²No	²⁵³Lr	²⁵⁴Rf
		151		²⁴⁴Np	²⁴⁵Pu	²⁴⁶Am	²⁴⁷Cm	²⁴⁸Bk	²⁴⁹Cf	²⁵⁰Es	²⁵¹Fm	²⁵²Md	²⁵³No	²⁵⁴Lr	²⁵⁵Rf
			152		²⁴⁶Pu	²⁴⁷Am	²⁴⁸Cm	²⁴⁹Bk	²⁵⁰Cf	²⁵¹Es	²⁵²Fm	²⁵³Md	²⁵⁴No	²⁵⁵Lr	²⁵⁶Rf
			153		²⁴⁷Pu	²⁴⁸Am	²⁴⁹Cm	²⁵⁰Bk	²⁵¹Cf	²⁵²Es	²⁵³Fm	²⁵⁴Md	²⁵⁵No	²⁵⁶Lr	²⁵⁷Rf
				154		²⁴⁹Am	²⁵⁰Cm	²⁵¹Bk	²⁵²Cf	²⁵³Es	²⁵⁴Fm	²⁵⁵Md	²⁵⁶No	²⁵⁷Lr	²⁵⁸Rf
					155		²⁵¹Cm	²⁵²Bk	²⁵³Cf	²⁵⁴Es	²⁵⁵Fm	²⁵⁶Md	²⁵⁷No	²⁵⁸Lr	²⁵⁹Rf
					156		²⁵²Cm	²⁵³Bk	²⁵⁴Cf	²⁵⁵Es	²⁵⁶Fm	²⁵⁷Md	²⁵⁸No	²⁵⁹Lr	²⁶⁰Rf
						157		²⁵⁴Bk	²⁵⁵Cf	²⁵⁶Es	²⁵⁷Fm	²⁵⁸Md	²⁵⁹No	²⁶⁰Lr	²⁶¹Rf
							158		²⁵⁶Cf	²⁵⁷Es	²⁵⁸Fm	²⁵⁹Md	²⁶⁰No	²⁶¹Lr	²⁶²Rf
								159		²⁵⁸Es	²⁵⁹Fm	²⁶⁰Md	²⁶¹No	²⁶²Lr	²⁶³Rf
									160		²⁶⁰Fm	²⁶¹Md	²⁶²No	²⁶³Lr	²⁶⁴Rf
										161		²⁶²Md	²⁶³No	²⁶⁴Lr	²⁶⁵Rf
											162		²⁶⁴No	²⁶⁵Lr	²⁶⁶Rf
												163		²⁶⁶Lr	²⁶⁷Rf
													164		²⁶⁸Rf

Isotopes for elements 105-118

← Previous | Next →Go to Unitized table (all elements)Go to Periodic table

**Half-lives** (example: Gd)
¹⁴⁵Gd	< 1 day
¹⁴⁶Gd	1–10 days
¹⁴⁹Gd	10–100 days
¹⁵³Gd	100d–10 years
¹⁴⁸Gd	10–10,000 years
¹⁵⁰Gd	10k–103m years
¹⁵²Gd	> 700m years
¹⁵⁸Gd	Stable

Z →	105
n ↓	Db
149		106
150	²⁵⁵Db	Sg	107
151	²⁵⁶Db		Bh
152	²⁵⁷Db	²⁵⁸Sg		108
153	²⁵⁸Db	²⁵⁹Sg	²⁶⁰Bh	Hs	109
154	²⁵⁹Db	²⁶⁰Sg	²⁶¹Bh		Mt	110
155	²⁶⁰Db	²⁶¹Sg	²⁶²Bh	²⁶³Hs		Ds
156	²⁶¹Db	²⁶²Sg	²⁶³Bh	²⁶⁴Hs	²⁶⁵Mt
157	²⁶²Db	²⁶³Sg	²⁶⁴Bh	²⁶⁵Hs	²⁶⁶Mt	²⁶⁷Ds
158	²⁶³Db	²⁶⁴Sg	²⁶⁵Bh	²⁶⁶Hs	²⁶⁷Mt	²⁶⁸Ds	111
159	²⁶⁴Db	²⁶⁵Sg	²⁶⁶Bh	²⁶⁷Hs	²⁶⁸Mt	²⁶⁹Ds	Rg
160	²⁶⁵Db	²⁶⁶Sg	²⁶⁷Bh	²⁶⁸Hs	²⁶⁹Mt	²⁷⁰Ds
161	²⁶⁶Db	²⁶⁷Sg	²⁶⁸Bh	²⁶⁹Hs	²⁷⁰Mt	²⁷¹Ds	²⁷²Rg
162	²⁶⁷Db	²⁶⁸Sg	²⁶⁹Bh	²⁷⁰Hs	²⁷¹Mt	²⁷²Ds	²⁷³Rg	112	113
163	²⁶⁸Db	²⁶⁹Sg	²⁷⁰Bh	²⁷¹Hs	²⁷²Mt	²⁷³Ds	²⁷⁴Rg	Uub	Uut
164	²⁶⁹Db	²⁷⁰Sg	²⁷¹Bh	²⁷²Hs	²⁷³Mt	²⁷⁴Ds	²⁷⁵Rg
165	²⁷⁰Db	²⁷¹Sg	²⁷²Bh	²⁷³Hs	²⁷⁴Mt	²⁷⁵Ds	²⁷⁶Rg	²⁷⁷Uub	²⁷⁸Uut
166		²⁷²Sg	²⁷³Bh	²⁷⁴Hs	²⁷⁵Mt	²⁷⁶Ds	²⁷⁷Rg	²⁷⁸Uub
167		²⁷³Sg	²⁷⁴Bh	²⁷⁵Hs	²⁷⁶Mt	²⁷⁷Ds	²⁷⁸Rg	²⁷⁹Uub
	168		²⁷⁵Bh	²⁷⁶Hs	²⁷⁷Mt	²⁷⁸Ds	²⁷⁹Rg	²⁸⁰Uub		114
		169		²⁷⁷Hs	²⁷⁸Mt	²⁷⁹Ds	²⁸⁰Rg	²⁸¹Uub	²⁸²Uut	Uuq	115
			170		²⁷⁹Mt	²⁸⁰Ds	²⁸¹Rg	²⁸²Uub	²⁸³Uut		Uup	116
				171		²⁸¹Ds	²⁸²Rg	²⁸³Uub	²⁸⁴Uut	²⁸⁵Uuq		Uuh	117
					172		²⁸³Rg	²⁸⁴Uub	²⁸⁵Uut	²⁸⁶Uuq	²⁸⁷Uup		Uus	118
						173		²⁸⁵Uub	²⁸⁶Uut	²⁸⁷Uuq	²⁸⁸Uup	²⁸⁹Uuh		Uuo
							174		²⁸⁷Uut	²⁸⁸Uuq	²⁸⁹Uup	²⁹⁰Uuh
								175		²⁸⁹Uuq	²⁹⁰Uup	²⁹¹Uuh		²⁹³Uuo
									176		²⁹¹Uup	²⁹²Uuh		²⁹⁴Uuo
										177		²⁹³Uuh

Unitized table (all elements)

Go to Segmented tableGo to Periodic table

**Half-lives** (example: Gd)
¹⁴⁵Gd	< 1 day
¹⁴⁶Gd	1–10 days
¹⁴⁹Gd	10–100 days
¹⁵³Gd	100d–10 years
¹⁴⁸Gd	10–10,000 years
¹⁵⁰Gd	10k–103m years
¹⁵²Gd	> 700m years
¹⁵⁸Gd	Stable

Z →	0	1	2
n ↓	n	H	He	3	4
0		¹H	²He	Li	Be	5	6
1	¹n	²H	³He	⁴Li	⁵Be	B	C	7
2	²n	³H	⁴He	⁵Li	⁶Be	⁷B	⁸C	N	8
3		⁴H	⁵He	⁶Li	⁷Be	⁸B	⁹C	¹⁰N	O	9
4	⁴n	⁵H	⁶He	⁷Li	⁸Be	⁹B	¹⁰C	¹¹N	¹²O	F	10
5		⁶H	⁷He	⁸Li	⁹Be	¹⁰B	¹¹C	¹²N	¹³O	¹⁴F	Ne	11
6		⁷H	⁸He	⁹Li	¹⁰Be	¹¹B	¹²C	¹³N	¹⁴O	¹⁵F	¹⁶Ne	Na	12
		7	⁹He	¹⁰Li	¹¹Be	¹²B	¹³C	¹⁴N	¹⁵O	¹⁶F	¹⁷Ne	¹⁸Na	Mg	13
		8	¹⁰He	¹¹Li	¹²Be	¹³B	¹⁴C	¹⁵N	¹⁶O	¹⁷F	¹⁸Ne	¹⁹Na	²⁰Mg	Al	14
			9	¹²Li	¹³Be	¹⁴B	¹⁵C	¹⁶N	¹⁷O	¹⁸F	¹⁹Ne	²⁰Na	²¹Mg	²²Al	Si	15
				10	¹⁴Be	¹⁵B	¹⁶C	¹⁷N	¹⁸O	¹⁹F	²⁰Ne	²¹Na	²²Mg	²³Al	²⁴Si	P	16
					11	¹⁶B	¹⁷C	¹⁸N	¹⁹O	²⁰F	²¹Ne	²²Na	²³Mg	²⁴Al	²⁵Si	²⁶P	S	17
						12	¹⁸C	¹⁹N	²⁰O	²¹F	²²Ne	²³Na	²⁴Mg	²⁵Al	²⁶Si	²⁷P		Cl	18
							13	²⁰N	²¹O	²²F	²³Ne	²⁴Na	²⁵Mg	²⁶Al	²⁷Si	²⁸P	²⁹S		Ar	19
								14	²²O	²³F	²⁴Ne	²⁵Na	²⁶Mg	²⁷Al	²⁸Si	²⁹P	³⁰S	³¹Cl		K	20
									15	²⁴F	²⁵Ne	²⁶Na	²⁷Mg	²⁸Al	²⁹Si	³⁰P	³¹S	³²Cl	³³Ar		Ca
										16	²⁶Ne	²⁷Na	²⁸Mg	²⁹Al	³⁰Si	³¹P	³²S	³³Cl	³⁴Ar	³⁵K		21
											17	²⁸Na	²⁹Mg	³⁰Al	³¹Si	³²P	³³S	³⁴Cl	³⁵Ar	³⁶K	³⁷Ca	Sc	22
												18	³⁰Mg	³¹Al	³²Si	³³P	³⁴S	³⁵Cl	³⁶Ar	³⁷K	³⁸Ca		Ti	23
													19	³²Al	³³Si	³⁴P	³⁵S	³⁶Cl	³⁷Ar	³⁸K	³⁹Ca	⁴⁰Sc	⁴¹Ti	V	24
														20	³⁴Si	³⁵P	³⁶S	³⁷Cl	³⁸Ar	³⁹K	⁴⁰Ca	⁴¹Sc	⁴²Ti		Cr	25
															21	³⁶P	³⁷S	³⁸Cl	³⁹Ar	⁴⁰K	⁴¹Ca	⁴²Sc	⁴³Ti	⁴⁴V	⁴⁵Cr	Mn	26
																22	³⁸S	³⁹Cl	⁴⁰Ar	⁴¹K	⁴²Ca	⁴³Sc	⁴⁴Ti	⁴⁵V	⁴⁶Cr		Fe	27
																	23	⁴⁰Cl	⁴¹Ar	⁴²K	⁴³Ca	⁴⁴Sc	⁴⁵Ti	⁴⁶V	⁴⁷Cr	⁴⁸Mn	⁴⁹Fe	Co	28
																	24	⁴¹Cl	⁴²Ar	⁴³K	⁴⁴Ca	⁴⁵Sc	⁴⁶Ti	⁴⁷V	⁴⁸Cr	⁴⁹Mn	⁵⁰Fe	⁵¹Co	Ni	29
																	25	⁴²Cl	⁴³Ar	⁴⁴K	⁴⁵Ca	⁴⁶Sc	⁴⁷Ti	⁴⁸V	⁴⁹Cr	⁵⁰Mn	⁵¹Fe	⁵²Co	⁵³Ni	Cu	30
																	26	⁴³Cl	⁴⁴Ar	⁴⁵K	⁴⁶Ca	⁴⁷Sc	⁴⁸Ti	⁴⁹V	⁵⁰Cr	⁵¹Mn	⁵²Fe	⁵³Co	⁵⁴Ni	⁵⁵Cu	Zn
																	27	⁴⁴Cl	⁴⁵Ar	⁴⁶K	⁴⁷Ca	⁴⁸Sc	⁴⁹Ti	⁵⁰V	⁵¹Cr	⁵²Mn	⁵³Fe	⁵⁴Co	⁵⁵Ni	⁵⁶Cu	⁵⁷Zn
																		28	⁴⁶Ar	⁴⁷K	⁴⁸Ca	⁴⁹Sc	⁵⁰Ti	⁵¹V	⁵²Cr	⁵³Mn	⁵⁴Fe	⁵⁵Co	⁵⁶Ni	⁵⁷Cu	⁵⁸Zn
																			29	⁴⁸K	⁴⁹Ca	⁵⁰Sc	⁵¹Ti	⁵²V	⁵³Cr	⁵⁴Mn	⁵⁵Fe	⁵⁶Co	⁵⁷Ni	⁵⁸Cu	⁵⁹Zn
																				30	⁵⁰Ca	⁵¹Sc	⁵²Ti	⁵³V	⁵⁴Cr	⁵⁵Mn	⁵⁶Fe	⁵⁷Co	⁵⁸Ni	⁵⁹Cu	⁶⁰Zn
																					31		⁵³Ti	⁵⁴V	⁵⁵Cr	⁵⁶Mn	⁵⁷Fe	⁵⁸Co	⁵⁹Ni	⁶⁰Cu	⁶¹Zn	31
																						32		⁵⁵V	⁵⁶Cr	⁵⁷Mn	⁵⁸Fe	⁵⁹Co	⁶⁰Ni	⁶¹Cu	⁶²Zn	Ga	32
																							33		⁵⁷Cr	⁵⁸Mn	⁵⁹Fe	⁶⁰Co	⁶¹Ni	⁶²Cu	⁶³Zn	⁶⁴Ga	Ge	33
																								34		⁵⁹Mn	⁶⁰Fe	⁶¹Co	⁶²Ni	⁶³Cu	⁶⁴Zn	⁶⁵Ga	⁶⁶Ge	As
																									35		⁶¹Fe	⁶²Co	⁶³Ni	⁶⁴Cu	⁶⁵Zn	⁶⁶Ga	⁶⁷Ge	⁶⁸As	34
																									36		⁶²Fe	⁶³Co	⁶⁴Ni	⁶⁵Cu	⁶⁶Zn	⁶⁷Ga	⁶⁸Ge	⁶⁹As	Se
																										37		⁶⁴Co	⁶⁵Ni	⁶⁶Cu	⁶⁷Zn	⁶⁸Ga	⁶⁹Ge	⁷⁰As	⁷¹Se	35
																											38		⁶⁶Ni	⁶⁷Cu	⁶⁸Zn	⁶⁹Ga	⁷⁰Ge	⁷¹As	⁷²Se	Br	36
																											39		⁶⁷Ni	⁶⁸Cu	⁶⁹Zn	⁷⁰Ga	⁷¹Ge	⁷²As	⁷³Se	⁷⁴Br	Kr	37
																											40		⁶⁸Ni	⁶⁹Cu	⁷⁰Zn	⁷¹Ga	⁷²Ge	⁷³As	⁷⁴Se	⁷⁵Br	⁷⁶Kr	Rb	38
																												41		⁷⁰Cu	⁷¹Zn	⁷²Ga	⁷³Ge	⁷⁴As	⁷⁵Se	⁷⁶Br	⁷⁷Kr	⁷⁸Rb	Sr	39
																													42		⁷²Zn	⁷³Ga	⁷⁴Ge	⁷⁵As	⁷⁶Se	⁷⁷Br	⁷⁸Kr	⁷⁹Rb	⁸⁰Sr	Y	40
																													43		⁷³Zn	⁷⁴Ga	⁷⁵Ge	⁷⁶As	⁷⁷Se	⁷⁸Br	⁷⁹Kr	⁸⁰Rb	⁸¹Sr	⁸²Y	Zr	41
																														44	⁷⁴Zn	⁷⁵Ga	⁷⁶Ge	⁷⁷As	⁷⁸Se	⁷⁹Br	⁸⁰Kr	⁸¹Rb	⁸²Sr	⁸³Y	⁸⁴Zr	Nb	42
																														45	⁷⁵Zn	⁷⁶Ga	⁷⁷Ge	⁷⁸As	⁷⁹Se	⁸⁰Br	⁸¹Kr	⁸²Rb	⁸³Sr	⁸⁴Y	⁸⁵Zr	⁸⁶Nb	Mo	43
																																	46	⁷⁹As	⁸⁰Se	⁸¹Br	⁸²Kr	⁸³Rb	⁸⁴Sr	⁸⁵Y	⁸⁶Zr	⁸⁷Nb	⁸⁸Mo	Tc	44
																																	47	⁸⁰As	⁸¹Se	⁸²Br	⁸³Kr	⁸⁴Rb	⁸⁵Sr	⁸⁶Y	⁸⁷Zr	⁸⁸Nb	⁸⁹Mo	⁹⁰Tc	Ru	45
																																	48	⁸¹As	⁸²Se	⁸³Br	⁸⁴Kr	⁸⁵Rb	⁸⁶Sr	⁸⁷Y	⁸⁸Zr	⁸⁹Nb	⁹⁰Mo	⁹¹Tc	⁹²Ru	Rh	46
																																	49	⁸²As	⁸³Se	⁸⁴Br	⁸⁵Kr	⁸⁶Rb	⁸⁷Sr	⁸⁸Y	⁸⁹Zr	⁹⁰Nb	⁹¹Mo	⁹²Tc	⁹³Ru		Pd	47
																																	50	⁸³As	⁸⁴Se	⁸⁵Br	⁸⁶Kr	⁸⁷Rb	⁸⁸Sr	⁸⁹Y	⁹⁰Zr	⁹¹Nb	⁹²Mo	⁹³Tc	⁹⁴Ru	⁹⁵Rh		Ag	48
																																		51	⁸⁵Se	⁸⁶Br	⁸⁷Kr	⁸⁸Rb	⁸⁹Sr	⁹⁰Y	⁹¹Zr	⁹²Nb	⁹³Mo	⁹⁴Tc	⁹⁵Ru	⁹⁶Rh	⁹⁷Pd		Cd
																																			52	⁸⁷Br	⁸⁸Kr	⁸⁹Rb	⁹⁰Sr	⁹¹Y	⁹²Zr	⁹³Nb	⁹⁴Mo	⁹⁵Tc	⁹⁶Ru	⁹⁷Rh	⁹⁸Pd	⁹⁹Ag	¹⁰⁰Cd	49
																																				53	⁸⁹Kr	⁹⁰Rb	⁹¹Sr	⁹²Y	⁹³Zr	⁹⁴Nb	⁹⁵Mo	⁹⁶Tc	⁹⁷Ru	⁹⁸Rh	⁹⁹Pd	¹⁰⁰Ag	¹⁰¹Cd	In	50
																																					54	⁹¹Rb	⁹²Sr	⁹³Y	⁹⁴Zr	⁹⁵Nb	⁹⁶Mo	⁹⁷Tc	⁹⁸Ru	⁹⁹Rh	¹⁰⁰Pd	¹⁰¹Ag	¹⁰²Cd		Sn	51
																																						55	⁹³Sr	⁹⁴Y	⁹⁵Zr	⁹⁶Nb	⁹⁷Mo	⁹⁸Tc	⁹⁹Ru	¹⁰⁰Rh	¹⁰¹Pd	¹⁰²Ag	¹⁰³Cd	¹⁰⁴In		Sb	52
																																							56	⁹⁵Y	⁹⁶Zr	⁹⁷Nb	⁹⁸Mo	⁹⁹Tc	¹⁰⁰Ru	¹⁰¹Rh	¹⁰²Pd	¹⁰³Ag	¹⁰⁴Cd				Te	53
																																							57	⁹⁶Y	⁹⁷Zr	⁹⁸Nb	⁹⁹Mo	¹⁰⁰Tc	¹⁰¹Ru	¹⁰²Rh	¹⁰³Pd	¹⁰⁴Ag	¹⁰⁵Cd	¹⁰⁶In	¹⁰⁷Sn		¹⁰⁹Te	I	54
																																							58	⁹⁷Y	⁹⁸Zr	⁹⁹Nb	¹⁰⁰Mo	¹⁰¹Tc	¹⁰²Ru	¹⁰³Rh	¹⁰⁴Pd	¹⁰⁵Ag	¹⁰⁶Cd	¹⁰⁷In	¹⁰⁸Sn				Xe	55
																																							59	⁹⁸Y	⁹⁹Zr	¹⁰⁰Nb	¹⁰¹Mo	¹⁰²Tc	¹⁰³Ru	¹⁰⁴Rh	¹⁰⁵Pd	¹⁰⁶Ag	¹⁰⁷Cd	¹⁰⁸In	¹⁰⁹Sn	¹¹⁰Sb	¹¹¹Te		¹¹³Xe	Cs
																																							60	⁹⁹Y	¹⁰⁰Zr	¹⁰¹Nb	¹⁰²Mo	¹⁰³Tc	¹⁰⁴Ru	¹⁰⁵Rh	¹⁰⁶Pd	¹⁰⁷Ag	¹⁰⁸Cd	¹⁰⁹In	¹¹⁰Sn	¹¹¹Sb	¹¹²Te				56
																																							61	¹⁰⁰Y	¹⁰¹Zr	¹⁰²Nb	¹⁰³Mo	¹⁰⁴Tc	¹⁰⁵Ru	¹⁰⁶Rh	¹⁰⁷Pd	¹⁰⁸Ag	¹⁰⁹Cd	¹¹⁰In	¹¹¹Sn	¹¹²Sb	¹¹³Te		¹¹⁵Xe	¹¹⁶Cs	Ba
																																								62	¹⁰²Zr	¹⁰³Nb	¹⁰⁴Mo	¹⁰⁵Tc	¹⁰⁶Ru	¹⁰⁷Rh	¹⁰⁸Pd	¹⁰⁹Ag	¹¹⁰Cd	¹¹¹In	¹¹²Sn	¹¹³Sb	¹¹⁴Te	¹¹⁵I	¹¹⁶Xe	¹¹⁷Cs
																																									63	¹⁰⁴Nb	¹⁰⁵Mo	¹⁰⁶Tc	¹⁰⁷Ru	¹⁰⁸Rh	¹⁰⁹Pd	¹¹⁰Ag	¹¹¹Cd	¹¹²In	¹¹³Sn	¹¹⁴Sb	¹¹⁵Te	¹¹⁶I	¹¹⁷Xe	¹¹⁸Cs	¹¹⁹Ba	57
																																										64	¹⁰⁶Mo	¹⁰⁷Tc	¹⁰⁸Ru	¹⁰⁹Rh	¹¹⁰Pd	¹¹¹Ag	¹¹²Cd	¹¹³In	¹¹⁴Sn	¹¹⁵Sb	¹¹⁶Te	¹¹⁷I	¹¹⁸Xe	¹¹⁹Cs		La
																																											65	¹⁰⁸Tc	¹⁰⁹Ru	¹¹⁰Rh	¹¹¹Pd	¹¹²Ag	¹¹³Cd	¹¹⁴In	¹¹⁵Sn	¹¹⁶Sb	¹¹⁷Te	¹¹⁸I	¹¹⁹Xe	¹²⁰Cs	¹²¹Ba
																																												66	¹¹⁰Ru	¹¹¹Rh	¹¹²Pd	¹¹³Ag	¹¹⁴Cd	¹¹⁵In	¹¹⁶Sn	¹¹⁷Sb	¹¹⁸Te	¹¹⁹I	¹²⁰Xe	¹²¹Cs	¹²²Ba
																																													67	¹¹²Rh	¹¹³Pd	¹¹⁴Ag	¹¹⁵Cd	¹¹⁶In	¹¹⁷Sn	¹¹⁸Sb	¹¹⁹Te	¹²⁰I	¹²¹Xe	¹²²Cs	¹²³Ba		58
																																														68	¹¹⁴Pd	¹¹⁵Ag	¹¹⁶Cd	¹¹⁷In	¹¹⁸Sn	¹¹⁹Sb	¹²⁰Te	¹²¹I	¹²²Xe	¹²³Cs	¹²⁴Ba	¹²⁵La	Ce
																																															69	¹¹⁶Ag	¹¹⁷Cd	¹¹⁸In	¹¹⁹Sn	¹²⁰Sb	¹²¹Te	¹²²I	¹²³Xe	¹²⁴Cs	¹²⁵Ba	¹²⁶La
																																															70	¹¹⁷Ag	¹¹⁸Cd	¹¹⁹In	¹²⁰Sn	¹²¹Sb	¹²²Te	¹²³I	¹²⁴Xe	¹²⁵Cs	¹²⁶Ba	¹²⁷La		59
																																															71	¹¹⁸Ag	¹¹⁹Cd	¹²⁰In	¹²¹Sn	¹²²Sb	¹²³Te	¹²⁴I	¹²⁵Xe	¹²⁶Cs	¹²⁷Ba	¹²⁸La	¹²⁹Ce	Pr	60
																																															72	¹¹⁹Ag	¹²⁰Cd	¹²¹In	¹²²Sn	¹²³Sb	¹²⁴Te	¹²⁵I	¹²⁶Xe	¹²⁷Cs	¹²⁸Ba	¹²⁹La	¹³⁰Ce		Nd
																																															73	¹²⁰Ag	¹²¹Cd	¹²²In	¹²³Sn	¹²⁴Sb	¹²⁵Te	¹²⁶I	¹²⁷Xe	¹²⁸Cs	¹²⁹Ba	¹³⁰La	¹³¹Ce	¹³²Pr		61	62	63
																																															74	¹²¹Ag	¹²²Cd	¹²³In	¹²⁴Sn	¹²⁵Sb	¹²⁶Te	¹²⁷I	¹²⁸Xe	¹²⁹Cs	¹³⁰Ba	¹³¹La	¹³²Ce	¹³³Pr	¹³⁴Nd	Pm	Sm	Eu
																																															75	¹²²Ag	¹²³Cd	¹²⁴In	¹²⁵Sn	¹²⁶Sb	¹²⁷Te	¹²⁸I	¹²⁹Xe	¹³⁰Cs	¹³¹Ba	¹³²La	¹³³Ce	¹³⁴Pr	¹³⁵Nd		¹³⁷Sm		64
																																															76	¹²³Ag	¹²⁴Cd	¹²⁵In	¹²⁶Sn	¹²⁷Sb	¹²⁸Te	¹²⁹I	¹³⁰Xe	¹³¹Cs	¹³²Ba	¹³³La	¹³⁴Ce	¹³⁵Pr	¹³⁶Nd	¹³⁷Pm	¹³⁸Sm	¹³⁹Eu	Gd
																																																77	¹²⁵Cd	¹²⁶In	¹²⁷Sn	¹²⁸Sb	¹²⁹Te	¹³⁰I	¹³¹Xe	¹³²Cs	¹³³Ba	¹³⁴La	¹³⁵Ce	¹³⁶Pr	¹³⁷Nd	¹³⁸Pm	¹³⁹Sm	¹⁴⁰Eu
																																																	78	¹²⁷In	¹²⁸Sn	¹²⁹Sb	¹³⁰Te	¹³¹I	¹³²Xe	¹³³Cs	¹³⁴Ba	¹³⁵La	¹³⁶Ce	¹³⁷Pr	¹³⁸Nd	¹³⁹Pm	¹⁴⁰Sm	¹⁴¹Eu	¹⁴²Gd
																																																		79	¹²⁹Sn	¹³⁰Sb	¹³¹Te	¹³²I	¹³³Xe	¹³⁴Cs	¹³⁵Ba	¹³⁶La	¹³⁷Ce	¹³⁸Pr	¹³⁹Nd	¹⁴⁰Pm	¹⁴¹Sm	¹⁴²Eu	¹⁴³Gd	65	66	67	68	69
																																																		80	¹³⁰Sn	¹³¹Sb	¹³²Te	¹³³I	¹³⁴Xe	¹³⁵Cs	¹³⁶Ba	¹³⁷La	¹³⁸Ce	¹³⁹Pr	¹⁴⁰Nd	¹⁴¹Pm	¹⁴²Sm	¹⁴³Eu	¹⁴⁴Gd	Tb	Dy	Ho	Er	Tm	70
																																																		81	¹³¹Sn	¹³²Sb	¹³³Te	¹³⁴I	¹³⁵Xe	¹³⁶Cs	¹³⁷Ba	¹³⁸La	¹³⁹Ce	¹⁴⁰Pr	¹⁴¹Nd	¹⁴²Pm	¹⁴³Sm	¹⁴⁴Eu	¹⁴⁵Gd	¹⁴⁶Tb	¹⁴⁷Dy				Yb	71
																																																		82	¹³²Sn	¹³³Sb	¹³⁴Te	¹³⁵I	¹³⁶Xe	¹³⁷Cs	¹³⁸Ba	¹³⁹La	¹⁴⁰Ce	¹⁴¹Pr	¹⁴²Nd	¹⁴³Pm	¹⁴⁴Sm	¹⁴⁵Eu	¹⁴⁶Gd	¹⁴⁷Tb	¹⁴⁸Dy		¹⁵⁰Er	¹⁵¹Tm		Lu
																																																		83	¹³³Sn	¹³⁴Sb	¹³⁵Te	¹³⁶I	¹³⁷Xe	¹³⁸Cs	¹³⁹Ba	¹⁴⁰La	¹⁴¹Ce	¹⁴²Pr	¹⁴³Nd	¹⁴⁴Pm	¹⁴⁵Sm	¹⁴⁶Eu	¹⁴⁷Gd	¹⁴⁸Tb	¹⁴⁹Dy	¹⁵⁰Ho	¹⁵¹Er
																																																		84	¹³⁴Sn	¹³⁵Sb	¹³⁶Te	¹³⁷I	¹³⁸Xe	¹³⁹Cs	¹⁴⁰Ba	¹⁴¹La	¹⁴²Ce	¹⁴³Pr	¹⁴⁴Nd	¹⁴⁵Pm	¹⁴⁶Sm	¹⁴⁷Eu	¹⁴⁸Gd	¹⁴⁹Tb	¹⁵⁰Dy	¹⁵¹Ho	¹⁵²Er	¹⁵³Tm	¹⁵⁴Yb	¹⁵⁵Lu
																																																			85	¹³⁶Sb	¹³⁷Te	¹³⁸I	¹³⁹Xe	¹⁴⁰Cs	¹⁴¹Ba	¹⁴²La	¹⁴³Ce	¹⁴⁴Pr	¹⁴⁵Nd	¹⁴⁶Pm	¹⁴⁷Sm	¹⁴⁸Eu	¹⁴⁹Gd	¹⁵⁰Tb	¹⁵¹Dy	¹⁵²Ho	¹⁵³Er	¹⁵⁴Tm	¹⁵⁵Yb	¹⁵⁶Lu
																																																				86	¹³⁸Te	¹³⁹I	¹⁴⁰Xe	¹⁴¹Cs	¹⁴²Ba	¹⁴³La	¹⁴⁴Ce	¹⁴⁵Pr	¹⁴⁶Nd	¹⁴⁷Pm	¹⁴⁸Sm	¹⁴⁹Eu	¹⁵⁰Gd	¹⁵¹Tb	¹⁵²Dy	¹⁵³Ho	¹⁵⁴Er	¹⁵⁵Tm	¹⁵⁶Yb
																																																					87	¹⁴⁰I	¹⁴¹Xe	¹⁴²Cs	¹⁴³Ba	¹⁴⁴La	¹⁴⁵Ce	¹⁴⁶Pr	¹⁴⁷Nd	¹⁴⁸Pm	¹⁴⁹Sm	¹⁵⁰Eu	¹⁵¹Gd	¹⁵²Tb	¹⁵³Dy	¹⁵⁴Ho	¹⁵⁵Er	¹⁵⁶Tm	¹⁵⁷Yb
																																																						88	¹⁴²Xe	¹⁴³Cs	¹⁴⁴Ba	¹⁴⁵La	¹⁴⁶Ce	¹⁴⁷Pr	¹⁴⁸Nd	¹⁴⁹Pm	¹⁵⁰Sm	¹⁵¹Eu	¹⁵²Gd	¹⁵³Tb	¹⁵⁴Dy	¹⁵⁵Ho	¹⁵⁶Er	¹⁵⁷Tm	¹⁵⁸Yb
																																																							89	¹⁴⁴Cs	¹⁴⁵Ba	¹⁴⁶La	¹⁴⁷Ce	¹⁴⁸Pr	¹⁴⁹Nd	¹⁵⁰Pm	¹⁵¹Sm	¹⁵²Eu	¹⁵³Gd	¹⁵⁴Tb	¹⁵⁵Dy	¹⁵⁶Ho	¹⁵⁷Er	¹⁵⁸Tm
																																																								90	¹⁴⁶Ba	¹⁴⁷La	¹⁴⁸Ce	¹⁴⁹Pr	¹⁵⁰Nd	¹⁵¹Pm	¹⁵²Sm	¹⁵³Eu	¹⁵⁴Gd	¹⁵⁵Tb	¹⁵⁶Dy	¹⁵⁷Ho	¹⁵⁸Er	¹⁵⁹Tm	¹⁶⁰Yb	¹⁶¹Lu
																																																									91	¹⁴⁸La	¹⁴⁹Ce	¹⁵⁰Pr	¹⁵¹Nd	¹⁵²Pm	¹⁵³Sm	¹⁵⁴Eu	¹⁵⁵Gd	¹⁵⁶Tb	¹⁵⁷Dy	¹⁵⁸Ho	¹⁵⁹Er	¹⁶⁰Tm	¹⁶¹Yb	¹⁶²Lu
																																																										92	¹⁵⁰Ce	¹⁵¹Pr	¹⁵²Nd	¹⁵³Pm	¹⁵⁴Sm	¹⁵⁵Eu	¹⁵⁶Gd	¹⁵⁷Tb	¹⁵⁸Dy	¹⁵⁹Ho	¹⁶⁰Er	¹⁶¹Tm	¹⁶²Yb
																																																											93			¹⁵⁴Pm	¹⁵⁵Sm	¹⁵⁶Eu	¹⁵⁷Gd	¹⁵⁸Tb	¹⁵⁹Dy	¹⁶⁰Ho	¹⁶¹Er	¹⁶²Tm	¹⁶³Yb	¹⁶⁴Lu
																																																												94	¹⁵⁴Nd		¹⁵⁶Sm	¹⁵⁷Eu	¹⁵⁸Gd	¹⁵⁹Tb	¹⁶⁰Dy	¹⁶¹Ho	¹⁶²Er	¹⁶³Tm	¹⁶⁴Yb	¹⁶⁵Lu	72	73	74	75	76	77	78	79	80
																																																													95		¹⁵⁷Sm	¹⁵⁸Eu	¹⁵⁹Gd	¹⁶⁰Tb	¹⁶¹Dy	¹⁶²Ho	¹⁶³Er	¹⁶⁴Tm	¹⁶⁵Yb	¹⁶⁶Lu	Hf	Ta	W	Re	Os	Ir	Pt	Au	Hg
																																																														96		¹⁵⁹Eu	¹⁶⁰Gd	¹⁶¹Tb	¹⁶²Dy	¹⁶³Ho	¹⁶⁴Er	¹⁶⁵Tm	¹⁶⁶Yb	¹⁶⁷Lu	¹⁶⁸Hf	¹⁶⁹Ta	¹⁷⁰W		¹⁷²Os	¹⁷¹Ir	¹⁷⁴Pt	¹⁷⁵Au
																																																														97		¹⁶⁰Eu	¹⁶¹Gd	¹⁶²Tb	¹⁶³Dy	¹⁶⁴Ho	¹⁶⁵Er	¹⁶⁶Tm	¹⁶⁷Yb	¹⁶⁸Lu	¹⁶⁹Hf	¹⁷⁰Ta	¹⁷¹W	¹⁷²Re	¹⁷³Os	¹⁷⁴Ir	¹⁷⁵Pt	¹⁷⁶Au	¹⁷⁷Hg
																																																															98		¹⁶²Gd	¹⁶³Tb	¹⁶⁴Dy	¹⁶⁵Ho	¹⁶⁶Er	¹⁶⁷Tm	¹⁶⁸Yb	¹⁶⁹Lu	¹⁷⁰Hf	¹⁷¹Ta	¹⁷²W		¹⁷⁴Os	¹⁷⁵Ir	¹⁷⁶Pt	¹⁷⁷Au	¹⁷⁸Hg
																																																																99		¹⁶⁴Tb	¹⁶⁵Dy	¹⁶⁶Ho	¹⁶⁷Er	¹⁶⁸Tm	¹⁶⁹Yb	¹⁷⁰Lu	¹⁷¹Hf	¹⁷²Ta	¹⁷³W	¹⁷⁴Re	¹⁷⁵Os	¹⁷⁶Ir	¹⁷⁷Pt	¹⁷⁸Au	¹⁷⁹Hg	81
																																																																	100		¹⁶⁶Dy	¹⁶⁷Ho	¹⁶⁸Er	¹⁶⁹Tm	¹⁷⁰Yb	¹⁷¹Lu	¹⁷²Hf	¹⁷³Ta	¹⁷⁴W	¹⁷⁵Re	¹⁷⁶Os	¹⁷⁷Ir	¹⁷⁸Pt	¹⁷⁹Au	¹⁸⁰Hg	Tl	82
																																																																	101		¹⁶⁷Dy	¹⁶⁸Ho	¹⁶⁹Er	¹⁷⁰Tm	¹⁷¹Yb	¹⁷²Lu	¹⁷³Hf	¹⁷⁴Ta	¹⁷⁵W	¹⁷⁶Re	¹⁷⁷Os	¹⁷⁸Ir	¹⁷⁹Pt		¹⁸¹Hg		Pb
																																																																		102		¹⁶⁹Ho	¹⁷⁰Er	¹⁷¹Tm	¹⁷²Yb	¹⁷³Lu	¹⁷⁴Hf	¹⁷⁵Ta	¹⁷⁶W	¹⁷⁷Re	¹⁷⁸Os	¹⁷⁹Ir	¹⁸⁰Pt	¹⁸¹Au	¹⁸²Hg
																																																																		103		¹⁷⁰Ho	¹⁷¹Er	¹⁷²Tm	¹⁷³Yb	¹⁷⁴Lu	¹⁷⁵Hf	¹⁷⁶Ta	¹⁷⁷W	¹⁷⁸Re	¹⁷⁹Os	¹⁸⁰Ir	¹⁸¹Pt	¹⁸²Au	¹⁸³Hg	¹⁸⁴Tl	¹⁸⁵Pb	83
																																																																			104		¹⁷²Er	¹⁷³Tm	¹⁷⁴Yb	¹⁷⁵Lu	¹⁷⁶Hf	¹⁷⁷Ta	¹⁷⁸W	¹⁷⁹Re	¹⁸⁰Os	¹⁸¹Ir	¹⁸²Pt	¹⁸³Au	¹⁸⁴Hg	¹⁸⁵Tl	¹⁸⁶Pb	Bi
																																																																			105		¹⁷³Er	¹⁷⁴Tm	¹⁷⁵Yb	¹⁷⁶Lu	¹⁷⁷Hf	¹⁷⁸Ta	¹⁷⁹W	¹⁸⁰Re	¹⁸¹Os	¹⁸²Ir	¹⁸³Pt	¹⁸⁴Au	¹⁸⁵Hg	¹⁸⁶Tl	¹⁸⁷Pb		84
																																																																				106		¹⁷⁵Tm	¹⁷⁶Yb	¹⁷⁷Lu	¹⁷⁸Hf	¹⁷⁹Ta	¹⁸⁰W	¹⁸¹Re	¹⁸²Os	¹⁸³Ir	¹⁸⁴Pt	¹⁸⁵Au	¹⁸⁶Hg	¹⁸⁷Tl	¹⁸⁸Pb	¹⁸⁹Bi	Po	85
																																																																				107		¹⁷⁶Tm	¹⁷⁷Yb	¹⁷⁸Lu	¹⁷⁹Hf	¹⁸⁰Ta	¹⁸¹W	¹⁸²Re	¹⁸³Os	¹⁸⁴Ir	¹⁸⁵Pt	¹⁸⁶Au	¹⁸⁷Hg	¹⁸⁸Tl	¹⁸⁹Pb	¹⁹⁰Bi		At
																																																																					108		¹⁷⁸Yb	¹⁷⁹Lu	¹⁸⁰Hf	¹⁸¹Ta	¹⁸²W	¹⁸³Re	¹⁸⁴Os	¹⁸⁵Ir	¹⁸⁶Pt	¹⁸⁷Au	¹⁸⁸Hg	¹⁸⁹Tl	¹⁹⁰Pb	¹⁹¹Bi
																																																																						109		¹⁸⁰Lu	¹⁸¹Hf	¹⁸²Ta	¹⁸³W	¹⁸⁴Re	¹⁸⁵Os	¹⁸⁶Ir	¹⁸⁷Pt	¹⁸⁸Au	¹⁸⁹Hg	¹⁹⁰Tl	¹⁹¹Pb	¹⁹²Bi	¹⁹³Po	¹⁹⁴At
																																																																							110		¹⁸²Hf	¹⁸³Ta	¹⁸⁴W	¹⁸⁵Re	¹⁸⁶Os	¹⁸⁷Ir	¹⁸⁸Pt	¹⁸⁹Au	¹⁹⁰Hg	¹⁹¹Tl	¹⁹²Pb	¹⁹³Bi	¹⁹⁴Po	¹⁹⁵At
																																																																							111		¹⁸³Hf	¹⁸⁴Ta	¹⁸⁵W	¹⁸⁶Re	¹⁸⁷Os	¹⁸⁸Ir	¹⁸⁹Pt	¹⁹⁰Au	¹⁹¹Hg	¹⁹²Tl	¹⁹³Pb	¹⁹⁴Bi	¹⁹⁵Po	¹⁹⁶At
																																																																							112		¹⁸⁴Hf	¹⁸⁵Ta	¹⁸⁶W	¹⁸⁷Re	¹⁸⁸Os	¹⁸⁹Ir	¹⁹⁰Pt	¹⁹¹Au	¹⁹²Hg	¹⁹³Tl	¹⁹⁴Pb	¹⁹⁵Bi	¹⁹⁶Po	¹⁹⁷At
																																																																							113		¹⁸⁵Hf	¹⁸⁶Ta	¹⁸⁷W	¹⁸⁸Re	¹⁸⁹Os	¹⁹⁰Ir	¹⁹¹Pt	¹⁹²Au	¹⁹³Hg	¹⁹⁴Tl	¹⁹⁵Pb	¹⁹⁶Bi	¹⁹⁷Po	¹⁹⁸At
																																																																								114			¹⁸⁸W	¹⁸⁹Re	¹⁹⁰Os	¹⁹¹Ir	¹⁹²Pt	¹⁹³Au	¹⁹⁴Hg	¹⁹⁵Tl	¹⁹⁶Pb	¹⁹⁷Bi	¹⁹⁸Po	¹⁹⁹At
																																																																									115		¹⁸⁹W	¹⁹⁰Re	¹⁹¹Os	¹⁹²Ir	¹⁹³Pt	¹⁹⁴Au	¹⁹⁵Hg	¹⁹⁶Tl	¹⁹⁷Pb	¹⁹⁸Bi	¹⁹⁹Po	²⁰⁰At
																																																																									116		¹⁹⁰W	¹⁹¹Re	¹⁹²Os	¹⁹³Ir	¹⁹⁴Pt	¹⁹⁵Au	¹⁹⁶Hg	¹⁹⁷Tl	¹⁹⁸Pb	¹⁹⁹Bi	²⁰⁰Po	²⁰¹At
																																																																										117		¹⁹²Re	¹⁹³Os	¹⁹⁴Ir	¹⁹⁵Pt	¹⁹⁶Au	¹⁹⁷Hg	¹⁹⁸Tl	¹⁹⁹Pb	²⁰⁰Bi	²⁰¹Po	²⁰²At
																																																																											118		¹⁹⁴Os	¹⁹⁵Ir	¹⁹⁶Pt	¹⁹⁷Au	¹⁹⁸Hg	¹⁹⁹Tl	²⁰⁰Pb	²⁰¹Bi	²⁰²Po	²⁰³At
																																																																											119		¹⁹⁵Os	¹⁹⁶Ir	¹⁹⁷Pt	¹⁹⁸Au	¹⁹⁹Hg	²⁰⁰Tl	²⁰¹Pb	²⁰²Bi	²⁰³Po	²⁰⁴At
																																																																											120		¹⁹⁶Os	¹⁹⁷Ir	¹⁹⁸Pt	¹⁹⁹Au	²⁰⁰Hg	²⁰¹Tl	²⁰²Pb	²⁰³Bi	²⁰⁴Po	²⁰⁵At
																																																																121		¹⁹⁸Ir	¹⁹⁹Pt	²⁰⁰Au	²⁰¹Hg	²⁰²Tl	²⁰³Pb	²⁰⁴Bi	²⁰⁵Po	²⁰⁶At
																																																																	122		²⁰⁰Pt	²⁰¹Au	²⁰²Hg	²⁰³Tl	²⁰⁴Pb	²⁰⁵Bi	²⁰⁶Po	²⁰⁷At
																																																																	123		²⁰¹Pt	²⁰²Au	²⁰³Hg	²⁰⁴Tl	²⁰⁵Pb	²⁰⁶Bi	²⁰⁷Po	²⁰⁸At
																																																																		124		²⁰³Au	²⁰⁴Hg	²⁰⁵Tl	²⁰⁶Pb	²⁰⁷Bi	²⁰⁸Po	²⁰⁹At
																																																																		125		²⁰⁴Au	²⁰⁵Hg	²⁰⁶Tl	²⁰⁷Pb	²⁰⁸Bi	²⁰⁹Po	²¹⁰At	86
																																																																			126		²⁰⁶Hg	²⁰⁷Tl	²⁰⁸Pb	²⁰⁹Bi	²¹⁰Po	²¹¹At	Rn	87
																																																																				127		²⁰⁸Tl	²⁰⁹Pb	²¹⁰Bi	²¹¹Po	²¹²At	²¹³Rn	Fr	88
																																																																				128		²⁰⁹Tl	²¹⁰Pb	²¹¹Bi	²¹²Po	²¹³At	²¹⁴Rn	²¹⁵Fr	Ra	89
																																																																				129		²¹⁰Tl	²¹¹Pb	²¹²Bi	²¹³Po	²¹⁴At	²¹⁵Rn	²¹⁶Fr	²¹⁷Ra	Ac	90
																																																																					130		²¹²Pb	²¹³Bi	²¹⁴Po	²¹⁵At	²¹⁶Rn	²¹⁷Fr	²¹⁸Ra	²¹⁹Ac	Th	91
																																																																					131		²¹³Pb	²¹⁴Bi	²¹⁵Po	²¹⁶At	²¹⁷Rn	²¹⁸Fr	²¹⁹Ra	²²⁰Ac	²²¹Th	Pa	92
																																																																					132		²¹⁴Pb	²¹⁵Bi	²¹⁶Po	²¹⁷At	²¹⁸Rn	²¹⁹Fr	²²⁰Ra	²²¹Ac	²²²Th	²²³Pa	U	93
																																																																						133			²¹⁷Po	²¹⁸At	²¹⁹Rn	²²⁰Fr	²²¹Ra	²²²Ac	²²³Th	²²⁴Pa		Np	94
																																																																							134		²¹⁸Po	²¹⁹At	²²⁰Rn	²²¹Fr	²²²Ra	²²³Ac	²²⁴Th	²²⁵Pa	²²⁶U		Pu	95
																																																																								135		²²⁰At	²²¹Rn	²²²Fr	²²³Ra	²²⁴Ac	²²⁵Th	²²⁶Pa	²²⁷U	²²⁸Np		Am
																																																																								136		²²¹At	²²²Rn	²²³Fr	²²⁴Ra	²²⁵Ac	²²⁶Th	²²⁷Pa	²²⁸U	²²⁹Np			96
																																																																									137		²²³Rn	²²⁴Fr	²²⁵Ra	²²⁶Ac	²²⁷Th	²²⁸Pa	²²⁹U	²³⁰Np		²³²Am	Cm
																																																																									138		²²⁴Rn	²²⁵Fr	²²⁶Ra	²²⁷Ac	²²⁸Th	²²⁹Pa	²³⁰U	²³¹Np	²³²Pu
																																																																									139		²²⁵Rn	²²⁶Fr	²²⁷Ra	²²⁸Ac	²²⁹Th	²³⁰Pa	²³¹U	²³²Np	²³³Pu	²³⁴Am		97	98	99	100
																																																																									140		²²⁶Rn	²²⁷Fr	²²⁸Ra	²²⁹Ac	²³⁰Th	²³¹Pa	²³²U	²³³Np	²³⁴Pu	²³⁵Am	²³⁶Cm	Bk	Cf	Es	Fm
																																																																										141		²²⁸Fr	²²⁹Ra	²³⁰Ac	²³¹Th	²³²Pa	²³³U	²³⁴Np	²³⁵Pu	²³⁶Am	²³⁷Cm
																																																																										142		²²⁹Fr	²³⁰Ra	²³¹Ac	²³²Th	²³³Pa	²³⁴U	²³⁵Np	²³⁶Pu	²³⁷Am	²³⁸Cm	²³⁹Bk	²⁴⁰Cf	²⁴¹Es	²⁴²Fm
																																																																											143			²³²Ac	²³³Th	²³⁴Pa	²³⁵U	²³⁶Np	²³⁷Pu	²³⁸Am	²³⁹Cm	²⁴⁰Bk	²⁴¹Cf	²⁴²Es	²⁴³Fm
																																																																												144			²³⁴Th	²³⁵Pa	²³⁶U	²³⁷Np	²³⁸Pu	²³⁹Am	²⁴⁰Cm	²⁴¹Bk	²⁴²Cf	²⁴³Es	²⁴⁴Fm	101
																																																																													145		²³⁵Th	²³⁶Pa	²³⁷U	²³⁸Np	²³⁹Pu	²⁴⁰Am	²⁴¹Cm	²⁴²Bk	²⁴³Cf	²⁴⁴Es	²⁴⁵Fm	Md	102
																																																																													146		²³⁶Th	²³⁷Pa	²³⁸U	²³⁹Np	²⁴⁰Pu	²⁴¹Am	²⁴²Cm	²⁴³Bk	²⁴⁴Cf	²⁴⁵Es	²⁴⁶Fm		No	103	104
																																																																														147		²³⁷Th	²³⁸Pa	²³⁹U	²⁴⁰Np	²⁴¹Pu	²⁴²Am	²⁴³Cm	²⁴⁴Bk	²⁴⁵Cf	²⁴⁶Es	²⁴⁷Fm	²⁴⁸Md		Lr	Rf	105
																																																																148		²³⁸Th	²³⁹Pa	²⁴⁰U	²⁴¹Np	²⁴²Pu	²⁴³Am	²⁴⁴Cm	²⁴⁵Bk	²⁴⁶Cf	²⁴⁷Es	²⁴⁸Fm	²⁴⁹Md	²⁵⁰No			Db
																																																																149		²⁴⁰Pa	²⁴¹U	²⁴²Np	²⁴³Pu	²⁴⁴Am	²⁴⁵Cm	²⁴⁶Bk	²⁴⁷Cf	²⁴⁸Es	²⁴⁹Fm	²⁵⁰Md	²⁵¹No	²⁵²Lr	²⁵³Rf		106
																																																																150		²⁴²U	²⁴³Np	²⁴⁴Pu	²⁴⁵Am	²⁴⁶Cm	²⁴⁷Bk	²⁴⁸Cf	²⁴⁹Es	²⁵⁰Fm	²⁵¹Md	²⁵²No	²⁵³Lr	²⁵⁴Rf	²⁵⁵Db	Sg	107
																																																																	151		²⁴⁴Np	²⁴⁵Pu	²⁴⁶Am	²⁴⁷Cm	²⁴⁸Bk	²⁴⁹Cf	²⁵⁰Es	²⁵¹Fm	²⁵²Md	²⁵³No	²⁵⁴Lr	²⁵⁵Rf	²⁵⁶Db		Bh
																																																																		152		²⁴⁶Pu	²⁴⁷Am	²⁴⁸Cm	²⁴⁹Bk	²⁵⁰Cf	²⁵¹Es	²⁵²Fm	²⁵³Md	²⁵⁴No	²⁵⁵Lr	²⁵⁶Rf	²⁵⁷Db	²⁵⁸Sg		108
																																																																		153		²⁴⁷Pu	²⁴⁸Am	²⁴⁹Cm	²⁵⁰Bk	²⁵¹Cf	²⁵²Es	²⁵³Fm	²⁵⁴Md	²⁵⁵No	²⁵⁶Lr	²⁵⁷Rf	²⁵⁸Db	²⁵⁹Sg	²⁶⁰Bh	Hs	109
																																																																			154		²⁴⁹Am	²⁵⁰Cm	²⁵¹Bk	²⁵²Cf	²⁵³Es	²⁵⁴Fm	²⁵⁵Md	²⁵⁶No	²⁵⁷Lr	²⁵⁸Rf	²⁵⁹Db	²⁶⁰Sg	²⁶¹Bh		Mt	110
																																																																				155		²⁵¹Cm	²⁵²Bk	²⁵³Cf	²⁵⁴Es	²⁵⁵Fm	²⁵⁶Md	²⁵⁷No	²⁵⁸Lr	²⁵⁹Rf	²⁶⁰Db	²⁶¹Sg	²⁶²Bh	²⁶³Hs		Ds
																																																																				156		²⁵²Cm	²⁵³Bk	²⁵⁴Cf	²⁵⁵Es	²⁵⁶Fm	²⁵⁷Md	²⁵⁸No	²⁵⁹Lr	²⁶⁰Rf	²⁶¹Db	²⁶²Sg	²⁶³Bh	²⁶⁴Hs	²⁶⁵Mt
																																																																					157		²⁵⁴Bk	²⁵⁵Cf	²⁵⁶Es	²⁵⁷Fm	²⁵⁸Md	²⁵⁹No	²⁶⁰Lr	²⁶¹Rf	²⁶²Db	²⁶³Sg	²⁶⁴Bh	²⁶⁵Hs	²⁶⁶Mt	²⁶⁷Ds
																																																																						158		²⁵⁶Cf	²⁵⁷Es	²⁵⁸Fm	²⁵⁹Md	²⁶⁰No	²⁶¹Lr	²⁶²Rf	²⁶³Db	²⁶⁴Sg	²⁶⁵Bh	²⁶⁶Hs	²⁶⁷Mt	²⁶⁸Ds	111
																																																																							159		²⁵⁸Es	²⁵⁹Fm	²⁶⁰Md	²⁶¹No	²⁶²Lr	²⁶³Rf	²⁶⁴Db	²⁶⁵Sg	²⁶⁶Bh	²⁶⁷Hs	²⁶⁸Mt	²⁶⁹Ds	Rg
																																																																								160		²⁶⁰Fm	²⁶¹Md	²⁶²No	²⁶³Lr	²⁶⁴Rf	²⁶⁵Db	²⁶⁶Sg	²⁶⁷Bh	²⁶⁸Hs	²⁶⁹Mt	²⁷⁰Ds
																																																																									161		²⁶²Md	²⁶³No	²⁶⁴Lr	²⁶⁵Rf	²⁶⁶Db	²⁶⁷Sg	²⁶⁸Bh	²⁶⁹Hs	²⁷⁰Mt	²⁷¹Ds	²⁷²Rg
																																																																										162		²⁶⁴No	²⁶⁵Lr	²⁶⁶Rf	²⁶⁷Db	²⁶⁸Sg	²⁶⁹Bh	²⁷⁰Hs	²⁷¹Mt	²⁷²Ds	²⁷³Rg	112	113
																																																																											163		²⁶⁶Lr	²⁶⁷Rf	²⁶⁸Db	²⁶⁹Sg	²⁷⁰Bh	²⁷¹Hs	²⁷²Mt	²⁷³Ds	²⁷⁴Rg	Uub	Uut
																																																																												164		²⁶⁸Rf	²⁶⁹Db	²⁷⁰Sg	²⁷¹Bh	²⁷²Hs	²⁷³Mt	²⁷⁴Ds	²⁷⁵Rg
																																																																165		²⁷⁰Db	²⁷¹Sg	²⁷²Bh	²⁷³Hs	²⁷⁴Mt	²⁷⁵Ds	²⁷⁶Rg	²⁷⁷Uub	²⁷⁸Uut
																																																																166		²⁷²Sg	²⁷³Bh	²⁷⁴Hs	²⁷⁵Mt	²⁷⁶Ds	²⁷⁷Rg	²⁷⁸Uub
																																																																167		²⁷³Sg	²⁷⁴Bh	²⁷⁵Hs	²⁷⁶Mt	²⁷⁷Ds	²⁷⁸Rg	²⁷⁹Uub
																																																																168		²⁷⁵Bh	²⁷⁶Hs	²⁷⁷Mt	²⁷⁸Ds	²⁷⁹Rg	²⁸⁰Uub		114
																																																																	169		²⁷⁷Hs	²⁷⁸Mt	²⁷⁹Ds	²⁸⁰Rg	²⁸¹Uub	²⁸²Uut	Uuq	115
																																																																		170		²⁷⁹Mt	²⁸⁰Ds	²⁸¹Rg	²⁸²Uub	²⁸³Uut		Uup	116
																																																																			171		²⁸¹Ds	²⁸²Rg	²⁸³Uub	²⁸⁴Uut	²⁸⁵Uuq		Uuh	117
																																																																				172		²⁸³Rg	²⁸⁴Uub	²⁸⁵Uut	²⁸⁶Uuq	²⁸⁷Uup		Uus	118
																																																																					173		²⁸⁵Uub	²⁸⁶Uut	²⁸⁷Uuq	²⁸⁸Uup	²⁸⁹Uuh		Uuo
																																																																						174		²⁸⁷Uut	²⁸⁸Uuq	²⁸⁹Uup	²⁹⁰Uuh
																																																																							175		²⁸⁹Uuq	²⁹⁰Uup	²⁹¹Uuh		²⁹³Uuo
																																																																								176		²⁹¹Uup	²⁹²Uuh		²⁹⁴Uuo
																																																																									177		²⁹³Uuh

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References

^ The data for these tables came from Brookhaven National Laboratory which has an interactive Table of Nuclides with data on ~3000 nuclides. Half-Life (computer-game page here It's already listed in the disambiguation page Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton Neutronium is a term originally used in Science fiction and in popular literature to refer to an extremely Dense phase of matter composed primarily of Hydrogen ( H) (Standard atomic mass 100794(7 u) has three naturally occurring isotopes, denoted 1H 2H Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 This article is a discussion of neutrons in general For the specific case of a neutron found outside the nucleus see Free neutron. Neutronium is a term originally used in Science fiction and in popular literature to refer to an extremely Dense phase of matter composed primarily of Hydrogen (ˈhaɪdrədʒən is the Chemical element with Atomic number 1 Helium ( He) is a colorless odorless tasteless non-toxic Inert Monatomic Chemical Naturally occurring Lithium ( Li) (standard atomic mass 6941(2 u) is composed of two stable Isotopes ( and, the latter being the more abundant Although Beryllium ( Be) has multiple Isotopes, only one of these isotopes is stable as such it is considered a monoisotopic element A diproton is a hypothetical type of Helium nucleus consisting of two Protons and no Neutrons Diprotons are not stable this is due to spin-spin interactions Lithium (ˈlɪθiəm is a Chemical element with the symbol Li and Atomic number 3 Beryllium (bəˈrɪliəm is a Chemical element with the symbol Be and Atomic number 4 Boron ( B)Standard atomic mass 10811(7 u Table Carbon ( C)Standard atomic mass 120107(8 u Natural isotopes See also Carbon-12, Carbon-13, Carbon-14 A free neutron is a Neutron that exists outside of an Atomic nucleus. Deuterium, also called heavy hydrogen, is a Stable isotope of Hydrogen with a Natural abundance in the Oceans of Earth This article is about the elemental isotope For the record label Helium 3 see Muse or A&E Records. Naturally occurring Lithium ( Li) (standard atomic mass 6941(2 u) is composed of two stable Isotopes ( and, the latter being the more abundant Boron (ˈbɔərɒn is a Chemical element with Atomic number 5 and the chemical symbol B. Carbon (kɑɹbən is a Chemical element with the symbol C and its Atomic number is 6 Nitrogen ( N)Standard atomic mass 140067(2 u Natural isotopes See also Nitrogen-14, Nitrogen-15 A dineutron is a hypothetical particle consisting of two Neutrons that was suggested to have a transitory existence in Nuclear reactions produced by helions Tritium (ˈtɹɪtiəm symbol or, also known as Hydrogen-3) is a radioactive Isotope of Hydrogen. Helium-4 ( or) is a non- Radioactive and light Isotope of Helium. Nitrogen (ˈnaɪtɹəʤɪn is a Chemical element that has the symbol N and Atomic number 7 and Atomic weight 14 There are three stable isotopes of oxygen that lead to Oxygen ( O) having a standard atomic mass of 15 Hydrogen-4 is a highly unstable Isotope of Hydrogen. The nucleus consists of a proton and three neutrons Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Oxygen (from the Greek roots ὀξύς (oxys (acid literally "sharp" from the taste of acids and -γενής (-genēs (producer literally begetteris the Although Fluorine ( F) has multiple Isotopes, only one of these isotopes is stable as such it is considered a monoisotopic element A tetraneutron is a hypothesised stable cluster of four Neutrons This cluster of particles is not supported by current models of nuclear forces Hydrogen-5 is a highly unstable Isotope of Hydrogen. The nucleus consists of a proton and four neutrons Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Fluorine, fluorum meaning "to flow" is the Chemical element with the symbol F and Atomic number 9 Neon ( Ne)Standard atomic mass 201797(6 u Table Hydrogen ( H) (Standard atomic mass 100794(7 u) has three naturally occurring isotopes, denoted 1H 2H Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Neon (ˈniːɒn is the Chemical element that has the symbol Ne and Atomic number 10 There are thirteen recognized Isotopes of Sodium. 23Na is the only stable isotope Hydrogen ( H) (Standard atomic mass 100794(7 u) has three naturally occurring isotopes, denoted 1H 2H Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Carbon-12 is the most abundant of the two stable Isotopes of the element Carbon, accounting for 98 Nitrogen-13 is a Radioisotope of Nitrogen used in Positron emission tomography (PET Sodium (ˈsoʊdiəm is an element which has the symbol Na( Latin natrium, from Arabic natrun) atomic number 11 atomic mass 22 Magnesium ( Mg)Standard atomic mass 243050(6 u Table Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Carbon-13 ( 13C) is a natural stable Isotope of Carbon and one of the Environmental isotopes. Nitrogen-14 is a stable, non- Radioactive Isotope of the Chemical element Nitrogen. Magnesium (mægˈniːziəm is a Chemical element with the symbol Mg, Atomic number 12 Atomic weight 24 Aluminium ( Al) has multiple Isotopes Only 27Al ( Stable isotope) and 26Al ( radioactive isotope ''t''1/2 Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Carbon-14, 14C, or radiocarbon, is a Radioactive isotope of Carbon discovered on February 27, 1940, by Nitrogen-15 is a stable non-radioactive Isotope of Nitrogen. It is often used in agricultural and medical research WikipediaNaming Silicon ( Si) has numerous known Isotopes with Mass numbers ranging from 22 to 44 Fluorine-18 is a Fluorine radioisotope which is an important source of Positrons It has a mass of 18 Silicon (ˈsɪlɪkən or /ˈsɪlɪkɒn/ silicium is the Chemical element that has the symbol Si and Atomic number 14 Oxygen-18 ( 18O) is a natural stable Isotope of Oxygen and one of the Environmental isotopes. Half-Life (computer-game page here It's already listed in the disambiguation page Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton Although Phosphorus ( P) has multiple Isotopes, only one of these isotopes is stable 31P as such it is considered a monoisotopic element This article is a discussion of neutrons in general For the specific case of a neutron found outside the nucleus see Free neutron. Phosphorus, (ˈfɒsfərəs is the Chemical element that has the symbol P and Atomic number 15 Sulfur ( S) has 18 Isotopes four of which are stable 32S (9502% 33S (0 Sulfur or sulphur (ˈsʌlfɚ see spelling below) is the Chemical element that has the Atomic number 16 Chlorine ( Cl) has isotopes with mass numbers ranging from 32 g mol−1 to 40 g mol−1 Chlorine (ˈklɔriːn from the Greek word 'χλωρóς' ( khlôros, meaning 'pale green' is the Chemical element with Atomic number 17 and The main Isotopes of Argon ( Ar) found on Earth are 40Ar 36Ar and 38Ar This article pertains to the chemical element For other uses see Argon (disambiguation. Potassium ( K) has 24 known Isotopes Three isotopes occur naturally 39K (93 Potassium (pəˈtæsiəm is a Chemical element. It has the symbol K (kalium from qalīy Atomic number 19 and Atomic mass 39 Calcium ( Ca) has four stable Isotopes (40Ca and 42Ca through 44Ca plus two more isotopes (46Ca and 48Ca Calcium (ˈkælsiəm is the Chemical element with the symbol Ca and Atomic number 20 Naturally occurring Scandium ( Sc) is composed of 1 stable Isotope 45Sc Scandium (ˈskændiəm is a Chemical element that has the symbol Sc and Atomic number 21 Naturally occurring Titanium ( Ti) is composed of 5 stable Isotopes 46Ti 47Ti 48Ti 49Ti and 50Ti Titanium (taɪˈteɪniəm is a Chemical element with the symbol Ti and Atomic number 22 Naturally occurring Vanadium ( V) is composed of one stable Isotope 51V and one radioactive isotope 50V with a Half-life Vanadium (vəˈneɪdiəm is a Chemical element that has the symbol V and Atomic number 23 Naturally occurring Chromium ( Cr) is composed of three stable Isotopes 52Cr 53Cr and 54Cr with 52Cr being Chromium (ˈkroʊmiəm is a Chemical element which has the symbol Cr and Atomic number 24 Naturally occurring Manganese ( Mn) is composed of 1 stable Isotope; 55Mn Manganese (ˈmæŋgəniːz is a Chemical element, designated by the symbol Mn. Naturally occurring Iron ( Fe) consists of four Isotopes 5845% of radioactive 54Fe (half-life >3 Iron (ˈаɪɚn is a Chemical element with the symbol Fe (ferrum and Atomic number 26 Naturally occurring Cobalt ( Co) is composed of 1 stable Isotope, 59Co Cobalt (ˈkoʊbɒlt is a hard lustrous silver-grey Metal, a Chemical element with symbol Co. Naturally occurring Nickel ( Ni) is composed of 5 stable Isotopes 58Ni 60Ni 61Ni 62Ni and 64Ni Nickel (ˈnɪkəl is a metallic Chemical element with the symbol Ni and Atomic number 28 Copper ( Cu) has two stable isotopes 63Cu and 65Cu along with numerous radioisotopes Copper (ˈkɒpɚ is a Chemical element with the symbol Cu (cuprum and Atomic number 29 Iron-56 is the most common Isotope of Iron. About 91754% of all iron is iron-56 Cobalt-60 (60Co is a Radioactive isotope of Cobalt, with a Half life of 5 Nickel-62 is an Isotope of Nickel with 28 Protons and 34 Neutrons It is a Stable isotope, and in fact has the highest Nuclear Half-Life (computer-game page here It's already listed in the disambiguation page Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton Naturally occurring Zinc ( Zn) is composed of the 5 stable Isotopes 64Zn 66Zn 67Zn 68Zn and 70Zn This article is a discussion of neutrons in general For the specific case of a neutron found outside the nucleus see Free neutron. Zinc (ˈzɪŋk from Zink is a Metallic Chemical element with the symbol Zn and Atomic number 30 Gallium ( Ga)Standard atomic mass 69723(1 u Table Gallium (ˈgæliəm is a Chemical element that has the symbol Ga and Atomic number 31 Germanium ( Ge)Standard atomic mass 7264(1 u Table Germanium (dʒɚˈmeɪniəm is a Chemical element with the symbol Ge and Atomic number 32 Although Arsenic ( As) has multiple Isotopes, only one of these isotopes is stable as such it is considered a monoisotopic element Arsenic (ˈɑrsənɪk is a Chemical element that has the symbol As and Atomic number of 33 Selenium ( Se) has six naturally occurring Isotopes five of which are stable 74Se 76Se 77Se 78Se and 80Se Selenium (səˈliniəm is a Chemical element with the Atomic number 34 represented by the chemical symbol Se, an atomic mass of 78 Bromine ( Br)Standard atomic mass 79904(1 u Table There are 31 known isotopes of Krypton ( Kr) Naturally occurring krypton is made of five stable and one slightly radioactive Isotope Krypton (ˈkrɪptən or /ˈkrɪptɒn/ from kryptos "hidden" is a Chemical element with the symbol Kr and Atomic number 36 Rubidium ( Rb) has 24 Isotopes with naturally occurring rubidium being composed of just two isotopes Rb-85 (72 Rubidium (ruːˈbɪdiəm /rəˈbɪdiəm/ is a Chemical element with the symbol Rb and Atomic number 37 The Alkali earth metal Strontium ( Sr) has four stable naturally occurring Isotopes 84Sr (0 Strontium (ˈstrɒntiəm /ˈstrɒnʃiəm/) is a Chemical element with the symbol Sr and the Atomic number 38 Natural Yttrium ( Y) is composed of only one Isotope (Y-89 The most stable Radioisotopes are Y-88 whichas a Half life of 106 Yttrium (ˈɪtriəm is a Chemical element with symbol Y and Atomic number 39 Naturally occurring Zirconium ( Zr) is composed of four stable isotopes and one extremely long-lived Radioisotope (96Zr which decays via Zirconium (zɚˈkoʊniəm /ˌzɝˈkoʊniəm/ is a Chemical element with the symbol Zr and Atomic number 40 Naturally occurring Niobium ( Nb) is composed of one stable Isotope (Nb-93 Niobium (naɪˈoʊbiəm or columbium (/kəˈlʌmbiəm/ is a Chemical element that has the symbol Nb and Atomic number 41 There are 35 known isotopes of Molybdenum ( Mo) ranging in Atomic mass from 83 to 117 as well as four metastable Nuclear isomers Seven isotopes Selenium-79 is a Radioisotope of Selenium present in Spent nuclear fuel and the wastes resulting from reprocessing this fuel Molybdenum (məˈlɪbdənəm from the Greek word for the metal " Lead " is a Group 6 Chemical element with the symbol Mo Technetium ( Tc) is one of the two elements in the first 82 that have no stable Isotopes (in fact it is the lowest-numbered element that is exclusively radioactive Technetium (tɛkˈniːʃɪəm is the lightest Chemical element with no Stable isotope. Naturally occurring Ruthenium ( Ru) is composed of seven stable Isotopes Additionally 34 radioactive isotopes have been discovered Ruthenium (ruːˈθiːniəm is a Chemical element that has the symbol Ru and Atomic number 44 Krypton 85 ( 85Kr) is a Radioisotope of Krypton. It decays into rubidium-85 with a Half-life of 10 Strontium-90 (90Sr is a Radioactive Isotope of Strontium, with a Half life of 28 93Zr is a Radioisotope of Zirconium with a Half life of 153 million years decaying with a low-energy Beta particle to Niobium Technetium-99 (99Tc is an isotope of Technetium which decays with a Half-life of 211000 years emitting soft beta rays but no gamma rays and has a Half-Life (computer-game page here It's already listed in the disambiguation page Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton Naturally occurring Rhodium ( Rh) is composed of only one Isotope, 103Rh This article is a discussion of neutrons in general For the specific case of a neutron found outside the nucleus see Free neutron. Rh redirects here For other uses see Rh (disambiguation Rhodium (ˈroʊdiəm is a Chemical element with the symbol Naturally-occurring Palladium ( Pd) is composed of six Isotopes The most stable Radioisotopes are 107Pd with a Half-life Palladium (pronounced \pəˈleɪdiəm\ is a rare and lustrous silvery-white metal that was discovered in 1803 by William Hyde Wollaston, who named it palladium after the Naturally occurring Silver ( Ag) is composed of the two stable Isotopes 107Ag and 109Ag with 107Ag being the more abundant Silver (ˈsɪlvɚ is a Chemical element with the symbol " Ag " (argentum from the Ancient Greek: ἀργήντος - argēntos gen Naturally occurring Cadmium ( Cd) is composed of 8 Isotopes For two of them natural Radioactivity was observed and three others are predicted Cadmium (ˈkædmiəm is a Chemical element with the symbol Cd and Atomic number 48 Indium ( In)Standard atomic mass 114818(3 u Table Indium (ˈɪndiəm is a Chemical element with chemical symbol In and Atomic number 49 Tin ( Sn) is the element with the greatest number of stable isotopes (ten which is probably related to the fact that 50 is a " magic number " of Tin is a Chemical element with the symbol Sn (stannum and Atomic number 50 Antimony ( Sb)Standard atomic mass 121760(1 u Table Antimony (IPA (Received Pronunciation, /ˈæntɪmoʊni/ (US is a Chemical element with the symbol Sb (stibium meaning "mark" and There are 30 known Isotopes of Tellurium ( Te) with Atomic masses that range from 108 to 137 Tellurium (tɪˈlʊəriəm/ /tɛl- is a Chemical element that has the symbol Te and Atomic number 52 There are 37 Isotopes of Iodine ( I) and only one 127I is stable Iodine (ˈaɪədaɪn ˈaɪədɪn or /ˈaɪədiːn/ from ιώδης iodes "violet" is a Chemical element that has the symbol I and Atomic Naturally occurring Xenon ( Xe) is made of nine stable Isotopes (124Xe 134Xe and 136Xe are predicted to undergo Xenon (ˈzɛnɒn or) is a Chemical element represented by the symbol Xe. Caesium ( Cs) has at least 39 known isotopes which is more than any other element except Francium. Caesium or cesium (ˈsiːziəm is the Chemical element with the symbol Cs and Atomic number 55 Naturally occurring Barium ( Ba) is a mix of seven stable Isotopes There are twenty-two isotopes known but most of these are highly Radioactive Palladium -107 is the second longest lived ( Halflife of 65 million years and least radioactive ( Decay energy only 33 KeV, Specific activity Barium (ˈbɛəriəm is a Chemical element. It has the symbol Ba, and Atomic number 56 Naturally occurring Lanthanum ( La) is composed of one stable (139La and one Radioactive (138La Isotope, with the stable Lanthanum (ˈlænθənəm is a Chemical element with the symbol La and Atomic number 57 Cadmium-113m is a Cadmium Radioisotope and Nuclear isomer with a Halflife of 14 Naturally occurring Cerium ( Ce) is composed of 3 stable Isotopes and 1 radioactive isotope 136Ce 138Ce 140Ce and 142Ce Cerium (ˈsɪəriəm is a Chemical element with the symbol Ce and Atomic number 58 Naturally occurring Praseodymium ( Pr) is composed of one stable Isotope, 141Pr Tin-121m is a radioisotope and Nuclear isomer of Tin with a Halflife of 43 Praseodymium (ˌpreɪzioʊˈdɪmiəm or /ˌpreɪsioʊˈdɪmiəm/ is a Chemical element that has the symbol Pr and Atomic number 59 Tin-126 is a Radioisotope of Tin and one of only 7 long-lived Fission products While tin-126's Halflife of 230000 years translates to a Iodine-129 (129I is a Radioisotope of Iodine. Formation and decay 129I is primarily formed from the Fission Iodine-131 (131I, also called radioiodine, is a Radioisotope of Iodine which has medical and pharmaceutical uses Caesium -134 has a Half-life of 20652 years It is produced both directly (at a very small yield as a Fission product, but not via Beta decay of other Caesium-135 is a Caesium Radioisotope with a Half-life of 23 million years undergoing low-energy Beta decay to Barium -135 135Xe is an isotope of Xenon, and a Fission product (yield 63333% which is the most powerful known Neutron -absorbing Nuclear poison and has Caesium-137 (also spelled cesium is a radioactive Isotope of Caesium which is formed mainly by Nuclear fission. Half-Life (computer-game page here It's already listed in the disambiguation page Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton Naturally occurring Neodymium ( Nd) is composed of 5 stable Isotopes 142Nd 143Nd 145Nd 146Nd and 148Nd This article is a discussion of neutrons in general For the specific case of a neutron found outside the nucleus see Free neutron. Neodymium (ˌniːoʊˈdɪmiəm is a Chemical element with the symbol Nd and Atomic number 60 36 Radioisotopes of Promethium ( Pm) have been characterized with the most stable being 145Pm with a Half-life of 17 Naturally occurring Samarium ( Sm) is composed of 4 stable Isotopes 144Sm 150Sm 152Sm and 154Sm and 3 extremely Naturally occurring Europium is composed of 2 Isotopes 151Eu and 153Eu with 153Eu being the most abundant (52 Promethium (prəˈmiːθiəm/ /proʊˈmiːθiəm is a Chemical element with the symbol Pm and Atomic number 61 Samarium (səˈmɛəriəm is a Chemical element with the symbol Sm and Atomic number 62 Europium (jʊˈroʊpiəm is a Chemical element with the symbol Eu and Atomic number 63 Naturally occurring Gadolinium ( Gd) is composed of 5 stable Isotopes 154Gd 155Gd 156Gd 157Gd and 158Gd Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 Naturally occurring Terbium ( Tb) is composed of 1 stable Isotope, 159-Tb Naturally occurring Dysprosium ( Dy) is composed of 7 stable Isotopes 156-Dy 158-Dy 160-Dy 161-Dy 162-Dy 163-Dy and 164-Dy with 164-Dy being the most Natural Holmium ( Ho) contains one Stable Isotope, holmium 165 Naturally occurring Erbium ( Er) is composed of 6 stable Isotopes Er-162 Er-164 Er-166 Er-167 Er-168 and Er-170 with Er-166 being the most abundant Naturally occurring Thulium ( Tm) is composed of 1 stable Isotope, Tm-169 (100% Natural abundance) Terbium (ˈtɝbiəm is a Chemical element with the symbol Tb and Atomic number 65 Holmium (ˈhoʊlmiəm is a Chemical element with the symbol Ho and Atomic number 67 Erbium (ˈɝbiəm is a Chemical element with the symbol Er and Atomic number 68 Thulium (ˈθjuːliəm is a Chemical element that has the symbol Tm and Atomic number 69 Naturally occurring Ytterbium ( Yb) is composed of 7 stable Isotopes Yb-168 Yb-170 Yb-171 Yb-172 Yb-173 Yb-174 and Yb-176 with Yb-174 being the most Naturally occurring Lutetium ( Lu) is composed of 1 stable Isotope Lu-175 (97 Lutetium (ljuːˈtiːʃiəm is a Chemical element with the symbol Lu and Atomic number 71 149Sm is a stable isotope of Samarium, and a Fission product (yield 1 is a Radioisotope of Samarium with a Half-life of 90 years undergoing low-energy Beta decay, and has a Fission product yield of Europium-155 is a Radioisotope or Europium and Fission product with a Halflife of 4 Hafnium ( Hf)Standard atomic mass 17849(2 u Table Natural Tantalum ( Ta) consists of two Isotopes 180mTa (0012% and 181Ta (99 Naturally occurring Tungsten ( W) consists of five Isotopes whose half-lives are so long that they can be considered stable. Hafnium (ˈhæfniəm is a Chemical element that has the symbol Hf and Atomic number 72 Tantalum (ˈtæntələm (formerly tantalium /tænˈtæliəm/ is a Chemical element with the symbol Ta and Atomic number 73 Tungsten (ˈtʌŋstən also known as wolfram (/ˈwʊlfrəm/ is a Chemical element that has the symbol W and Atomic number 74 Half-Life (computer-game page here It's already listed in the disambiguation page Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton Naturally occurring Rhenium ( Re) is 374% 185Re which is stable, and 62 Osmium ( Os) has seven naturally-occurring Isotopes 5 of which are stable 187Os 188Os 189Os 190Os and (most There are two natural Isotopes of Iridium ( Ir) and many Radioisotopes the most stable radioisotope being Ir-192 with a Half-life Platinum ( Pt)Standard atomic mass 195084(9 u Table Gold ( Au) has one stable Isotope, 197Au, and 18 Radioisotopes with 195Au being the most stable with There are seven stable Isotopes of mercury ( Hg) with Hg-202 being the most abundant (29 This article is a discussion of neutrons in general For the specific case of a neutron found outside the nucleus see Free neutron. Rhenium (ˈriːniəm is a Chemical element with the symbol Re and Atomic number 75 Osmium (ˈɒzmiəm is a Chemical element that has the symbol Os and Atomic number 76 Iridium (ɪˈrɪdiəm is a Chemical element that has the symbol Ir and Atomic number 77 Platinum (ˈplætɪnəm is a Chemical element with the Atomic symbol Pt and an Atomic number of 78 Gold (ˈɡoʊld is a Chemical element with the symbol Au (from its Latin name aurum) and Atomic number 79 Mercury (ˈmɜrkjʊri also called quicksilver or hydrargyrum, is a Chemical element with the symbol Hg ( Latinized hydrargyrum Thallium ( Tl) has 25 Isotopes which have Atomic masses that range from 184 to 210 Thallium (ˈθæliəm is a Chemical element with the symbol Tl and Atomic number 81 Lead ( Pb) has four stable Isotopes - 204Pb 206Pb 207Pb 208Pb and one common Radiogenic isotope Characteristics Lead has a dull luster and is a dense, Ductile, very soft highly Standard atomic mass 20898040(1 u Isotopes of Bismuth (Bi occurring within the radioactive Disintegration chains of Actinium Bismuth (ˈbɪzməθ is a Chemical element that has the symbol Bi and Atomic number 83 Polonium ( Po) has 33 known isotopes, all of which are radioactive. Polonium (pəˈloʊniəm is a Chemical element with the symbol Po and Atomic number 84 discovered in 1898 by Marie and Pierre Curie Astatine ( At) has 33 known Isotopes all of which are Radioactive; the range of their mass numbers is from 191 to 223 Astatine (ˈæstətiːn is a Radioactive Chemical element with the symbol At and Atomic number 85 There are thirty four known Isotopes of Radon ( Rn) The most stable isotope is 222Rn which is a Decay product (daughter product of Bismuth-209 is the most stable Isotope of Bismuth. It has 83 protons and 126 neutrons and an atomic mass of 208 Radon (ˈreɪdɒn is the Chemical element that has the symbol Rn and Atomic number 86 Francium ( Fr) has no stable Isotopes. A standard Atomic mass cannot be given Francium (ˈfrænsiəm formerly known as eka-caesium and actinium K, is a Chemical element that has the symbol Fr and Radium ( Ra) has no stable Isotopes A standard Atomic mass cannot be given Radium (ˈreɪdiəm is a radioactive Chemical element which has the symbol Ra and Atomic number 88 Actinium ( Ac) has no stable isotopes A standard atomic mass cannot be given Actinium (ækˈtɪniəm is a radioactive Chemical element with the symbol Ac and Atomic number 89 which was discovered in 1899, the earliest Half-Life (computer-game page here It's already listed in the disambiguation page Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton Although Thorium ( Th) has multiple Isotopes, none of these isotopes are stable however one isotope is relatively stable ( 232Th This article is a discussion of neutrons in general For the specific case of a neutron found outside the nucleus see Free neutron. Thorium (ˈθɔːriəm is a Chemical element with the symbol Th and Atomic number 90 Protactinium ( Pa)Standard atomic mass 23103588(2 u The element has no stable isotopes Protactinium (ˌproʊtækˈtɪniəm is a Chemical element with the symbol Pa and Atomic number 91 Uranium ( U) is a naturally occurring element with no Stable isotopes In other words all uranium is Radioactive and hence vanishing by Radioactive Uranium (jʊˈreɪniəm is a silvery-gray Metallic Chemical element in the Neptunium ( Np) has no stable isotopes A standard atomic mass cannot be given Neptunium (nɛpˈtjuːniəm is a Chemical element with the symbol Np and Atomic number 93 Plutonium ( Pu) has no stable isotopes A standard atomic mass cannot be given Americium ( Am) has no stable Isotopes A standard atomic mass cannot be given Americium (ˌæməˈrɪsiəm is a Synthetic element that has the symbol Am and Atomic number 95 Curium ( Cm) has no stable isotopes A standard atomic mass cannot be given This article is about the chemical element Curium for the ancient city also called Curium (located in Cyprus see Kourion Curium (ˈkjuːriəm Berkelium ( Bk) has no stable isotopes A standard atomic mass cannot be given Californium ( Cf) has no stable isotopes A standard atomic mass cannot be given Einsteinium ( Es) has no stable isotopes A standard atomic mass cannot be given Fermium ( Fm) has no stable isotopes A standard atomic mass cannot be given Thorium-230 (230Th is a Radioactive Isotope of Thorium which can be used to date Corals and determine Ocean current Uranium 232 (92232 is an isotope of Uranium. It has a half life of 68 Bk redirects here For other uses of the abbreviation see BK (disambiguation. Californium (ˌkælɪˈforniəm is a Metallic Chemical element with the symbol Cf and Atomic number 98 Einsteinium (aɪnˈstaɪniəm is a Metallic Synthetic element. Fermium (ˈfɝmiəm is a Synthetic element with the symbol Fm and Atomic number 100 Uranium-233 is a Fissile artificial isotope of Uranium, which has been used in a few Nuclear reactors and has been proposed for much wider use as a Thorium-232 is the primary abundant Nuclide of Thorium. It is a slightly unstable Radionuclide that is found in the earth's crust Uranium-234 is an isotope of Uranium. In Natural uranium and uranium ore 234U occurs as an indirect Decay product of 238U Uranium-235 is an isotope of uranium that differs from the element's other common isotope Uranium-238, by its ability to cause a rapidly expanding fission Uranium-236 is an isotope of Uranium that is neither Fissile with Thermal neutrons nor very good Fertile material, but is generally considered Neptunium (nɛpˈtjuːniəm is a Chemical element with the symbol Np and Atomic number 93 Plutonium 238, is a Radioactive isotope of Plutonium with a half-life of 87 Mendelevium ( Md) has no stable isotopes A standard atomic mass cannot be given Plutonium-239 is an Isotope of Plutonium. Plutonium-239 is the primary Fissile isotope used for the production of Nuclear weapons although Mendelevium (ˌmɛndəˈlɛviəm is a Synthetic element with the symbol Md (formerly Mv) and the Atomic number 101 Nobelium ( No) has no stable isotopes A standard atomic mass cannot be given Uranium-238 (U-238 is the most common isotope of Uranium found in nature Plutonium-240 (Pu-240 is an Isotope of the Metal Plutonium formed when Plutonium-239 captures a Neutron. Americium ( Am) has no stable Isotopes A standard atomic mass cannot be given Nobelium (noʊˈbɛliəm or /noʊˈbiːliəm/ is a Synthetic element with the symbol No and Atomic number 102 Lawrencium ( Lr) has no stable isotopes due to its Radioactivity. Rutherfordium ( Rf) has no stable isotopes A standard atomic mass cannot be given though the atomic mass of the most stable isotope is approx Uranium-239 is an isotope of uranium. It is usually produced by exposing Uranium-238 to Neutron Radiation in a nuclear reactor Plutonium-241 (Pu-241 is an Isotope of Plutonium formed when Plutonium-240 captures a Neutron. Lawrencium (ləˈrɛnsiəm is a Radioactive Synthetic element with the symbol Lr (formerly Lw) and Atomic number 103 Rutherfordium (ˌrʌðɚˈfɔrdiəm is a Chemical element in the Periodic table that has the symbol Rf and Atomic number 104 Plutonium ( Pu) has no stable isotopes A standard atomic mass cannot be given See also Isotopes of plutonium Plutonium -244 has a Halflife of 80 million years Half-Life (computer-game page here It's already listed in the disambiguation page Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton Dubnium ( Db) has no stable isotopes A standard atomic mass cannot be given though the atomic mass of the most stable isotope is approx This article is a discussion of neutrons in general For the specific case of a neutron found outside the nucleus see Free neutron. Dubnium (ˈduːbniəm is a Chemical element in the Periodic table that has the symbol Db and Atomic number 105 Seaborgium ( Sg) has no stable isotopes A standard atomic mass cannot be given though the atomic mass of the most stable isotope is approx Seaborgium (siːˈbɔrgiəm is a Chemical element in the Periodic table that has the symbol Sg and Atomic number 106 Image of Seaborgium Bohrium ( Bh) has no stable isotopes A standard atomic mass cannot be given though the atomic mass of the most stable isotope is approx Bohrium (ˈbɔəriəm is a Chemical element in the Periodic table that has the symbol Bh and Atomic number 107 Hassium ( Hs) has no stable isotopes A standard atomic mass cannot be given Hassium (ˈhæsiəm or /ˈhɑːsiəm/ is a Synthetic element in the Periodic table that has the symbol Hs and Atomic number 108 Meitnerium ( Mt) has no stable isotopes due to its high Radioactivity due to its status as an Transactinide. Meitnerium (maɪtˈnɜriəm is a Chemical element in the Periodic table that has the symbol Mt and Atomic number 109 Darmstadtium ( Ds) has no stable isotopes A standard atomic mass cannot be given Darmstadtium (dɑrmˈʃtætiəm formerly known as Ununnilium is a Chemical element with the symbol Ds and Atomic number 110 Roentgenium ( Rg) has no stable isotopes A standard atomic mass cannot be given Roentgenium (rɛntˈgɛniəm /rʌntˈdʒɛniəm/ is a Chemical element in the Periodic table that has the symbol Rg and Atomic number Ununbium ( Uub) has no stable isotopes A standard atomic mass cannot be given Ununtrium ( Uut) has no stable isotopes Table Ununtrium (juːˈnʌntriəm or /əˈnʌntriəm/ is the temporary name of a Synthetic element in the Periodic table that has the temporary symbol Uut and Ununquadium ( Uuq) has no stable Isotopes. A standard atomic mass cannot be given Ununquadium (ˌjuːnənˈkwɒdiəm or /ˌʌnənˈkwɒdiəm/ is the temporary name of a radioactive Chemical element in the Periodic table that has the Ununpentium ( Uup) has no stable isotopes A standard atomic mass cannot be given Ununpentium (ˌjuːnənˈpɛntiəm or /ˌʌnənˈpɛntiəm/ is the temporary name of a synthetic Superheavy element in the Periodic table that has the Ununhexium ( Uuh) has no stable isotopes A standard atomic mass cannot be given Ununhexium (ˌjuːnənˈhɛksiəm or /ˌʌnənˈhɛksiəm/ is the temporary name of a synthetic Superheavy element in the Periodic table that has the temporary Ununseptium ( Uus) has not yet been synthesized all data are theoretical Ununseptium (ˌjuːnənˈsɛptiəm or /ˌʌnənˈsɛptiəm/ is the temporary name of an undiscovered Chemical element in the Periodic table that has the temporary Ununoctium ( Uuo) was only very recently synthesized all data are theoretical Ununoctium (ˌjuːnəˈnɒktiəm or /ˌʌnəˈnɒktiəm/ also known as eka-radon or element 118, is the temporary IUPAC name for Half-Life (computer-game page here It's already listed in the disambiguation page Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton Neutronium is a term originally used in Science fiction and in popular literature to refer to an extremely Dense phase of matter composed primarily of Hydrogen ( H) (Standard atomic mass 100794(7 u) has three naturally occurring isotopes, denoted 1H 2H Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 This article is a discussion of neutrons in general For the specific case of a neutron found outside the nucleus see Free neutron. Neutronium is a term originally used in Science fiction and in popular literature to refer to an extremely Dense phase of matter composed primarily of Hydrogen (ˈhaɪdrədʒən is the Chemical element with Atomic number 1 Helium ( He) is a colorless odorless tasteless non-toxic Inert Monatomic Chemical Naturally occurring Lithium ( Li) (standard atomic mass 6941(2 u) is composed of two stable Isotopes ( and, the latter being the more abundant Although Beryllium ( Be) has multiple Isotopes, only one of these isotopes is stable as such it is considered a monoisotopic element A diproton is a hypothetical type of Helium nucleus consisting of two Protons and no Neutrons Diprotons are not stable this is due to spin-spin interactions Lithium (ˈlɪθiəm is a Chemical element with the symbol Li and Atomic number 3 Beryllium (bəˈrɪliəm is a Chemical element with the symbol Be and Atomic number 4 Boron ( B)Standard atomic mass 10811(7 u Table Carbon ( C)Standard atomic mass 120107(8 u Natural isotopes See also Carbon-12, Carbon-13, Carbon-14 A free neutron is a Neutron that exists outside of an Atomic nucleus. Deuterium, also called heavy hydrogen, is a Stable isotope of Hydrogen with a Natural abundance in the Oceans of Earth This article is about the elemental isotope For the record label Helium 3 see Muse or A&E Records. Naturally occurring Lithium ( Li) (standard atomic mass 6941(2 u) is composed of two stable Isotopes ( and, the latter being the more abundant Boron (ˈbɔərɒn is a Chemical element with Atomic number 5 and the chemical symbol B. Carbon (kɑɹbən is a Chemical element with the symbol C and its Atomic number is 6 Nitrogen ( N)Standard atomic mass 140067(2 u Natural isotopes See also Nitrogen-14, Nitrogen-15 A dineutron is a hypothetical particle consisting of two Neutrons that was suggested to have a transitory existence in Nuclear reactions produced by helions Tritium (ˈtɹɪtiəm symbol or, also known as Hydrogen-3) is a radioactive Isotope of Hydrogen. Helium-4 ( or) is a non- Radioactive and light Isotope of Helium. Nitrogen (ˈnaɪtɹəʤɪn is a Chemical element that has the symbol N and Atomic number 7 and Atomic weight 14 There are three stable isotopes of oxygen that lead to Oxygen ( O) having a standard atomic mass of 15 Hydrogen-4 is a highly unstable Isotope of Hydrogen. The nucleus consists of a proton and three neutrons Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Oxygen (from the Greek roots ὀξύς (oxys (acid literally "sharp" from the taste of acids and -γενής (-genēs (producer literally begetteris the Although Fluorine ( F) has multiple Isotopes, only one of these isotopes is stable as such it is considered a monoisotopic element A tetraneutron is a hypothesised stable cluster of four Neutrons This cluster of particles is not supported by current models of nuclear forces Hydrogen-5 is a highly unstable Isotope of Hydrogen. The nucleus consists of a proton and four neutrons Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Fluorine, fluorum meaning "to flow" is the Chemical element with the symbol F and Atomic number 9 Neon ( Ne)Standard atomic mass 201797(6 u Table Hydrogen ( H) (Standard atomic mass 100794(7 u) has three naturally occurring isotopes, denoted 1H 2H Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Neon (ˈniːɒn is the Chemical element that has the symbol Ne and Atomic number 10 There are thirteen recognized Isotopes of Sodium. 23Na is the only stable isotope Hydrogen ( H) (Standard atomic mass 100794(7 u) has three naturally occurring isotopes, denoted 1H 2H Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Carbon-12 is the most abundant of the two stable Isotopes of the element Carbon, accounting for 98 Nitrogen-13 is a Radioisotope of Nitrogen used in Positron emission tomography (PET Sodium (ˈsoʊdiəm is an element which has the symbol Na( Latin natrium, from Arabic natrun) atomic number 11 atomic mass 22 Magnesium ( Mg)Standard atomic mass 243050(6 u Table Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Carbon-13 ( 13C) is a natural stable Isotope of Carbon and one of the Environmental isotopes. Nitrogen-14 is a stable, non- Radioactive Isotope of the Chemical element Nitrogen. Magnesium (mægˈniːziəm is a Chemical element with the symbol Mg, Atomic number 12 Atomic weight 24 Aluminium ( Al) has multiple Isotopes Only 27Al ( Stable isotope) and 26Al ( radioactive isotope ''t''1/2 Although there are eight known Isotopes of Helium ( He) (standard atomic mass 4 Carbon-14, 14C, or radiocarbon, is a Radioactive isotope of Carbon discovered on February 27, 1940, by Nitrogen-15 is a stable non-radioactive Isotope of Nitrogen. It is often used in agricultural and medical research WikipediaNaming Silicon ( Si) has numerous known Isotopes with Mass numbers ranging from 22 to 44 Fluorine-18 is a Fluorine radioisotope which is an important source of Positrons It has a mass of 18 Silicon (ˈsɪlɪkən or /ˈsɪlɪkɒn/ silicium is the Chemical element that has the symbol Si and Atomic number 14 Although Phosphorus ( P) has multiple Isotopes, only one of these isotopes is stable 31P as such it is considered a monoisotopic element Oxygen-18 ( 18O) is a natural stable Isotope of Oxygen and one of the Environmental isotopes. Phosphorus, (ˈfɒsfərəs is the Chemical element that has the symbol P and Atomic number 15 Sulfur ( S) has 18 Isotopes four of which are stable 32S (9502% 33S (0 Sulfur or sulphur (ˈsʌlfɚ see spelling below) is the Chemical element that has the Atomic number 16 Chlorine ( Cl) has isotopes with mass numbers ranging from 32 g mol−1 to 40 g mol−1 Chlorine (ˈklɔriːn from the Greek word 'χλωρóς' ( khlôros, meaning 'pale green' is the Chemical element with Atomic number 17 and The main Isotopes of Argon ( Ar) found on Earth are 40Ar 36Ar and 38Ar This article pertains to the chemical element For other uses see Argon (disambiguation. Potassium ( K) has 24 known Isotopes Three isotopes occur naturally 39K (93 Potassium (pəˈtæsiəm is a Chemical element. It has the symbol K (kalium from qalīy Atomic number 19 and Atomic mass 39 Calcium ( Ca) has four stable Isotopes (40Ca and 42Ca through 44Ca plus two more isotopes (46Ca and 48Ca Calcium (ˈkælsiəm is the Chemical element with the symbol Ca and Atomic number 20 Naturally occurring Scandium ( Sc) is composed of 1 stable Isotope 45Sc Scandium (ˈskændiəm is a Chemical element that has the symbol Sc and Atomic number 21 Naturally occurring Titanium ( Ti) is composed of 5 stable Isotopes 46Ti 47Ti 48Ti 49Ti and 50Ti Titanium (taɪˈteɪniəm is a Chemical element with the symbol Ti and Atomic number 22 Naturally occurring Vanadium ( V) is composed of one stable Isotope 51V and one radioactive isotope 50V with a Half-life Vanadium (vəˈneɪdiəm is a Chemical element that has the symbol V and Atomic number 23 Naturally occurring Chromium ( Cr) is composed of three stable Isotopes 52Cr 53Cr and 54Cr with 52Cr being Chromium (ˈkroʊmiəm is a Chemical element which has the symbol Cr and Atomic number 24 Naturally occurring Manganese ( Mn) is composed of 1 stable Isotope; 55Mn Manganese (ˈmæŋgəniːz is a Chemical element, designated by the symbol Mn. Naturally occurring Iron ( Fe) consists of four Isotopes 5845% of radioactive 54Fe (half-life >3 Iron (ˈаɪɚn is a Chemical element with the symbol Fe (ferrum and Atomic number 26 Naturally occurring Cobalt ( Co) is composed of 1 stable Isotope, 59Co Cobalt (ˈkoʊbɒlt is a hard lustrous silver-grey Metal, a Chemical element with symbol Co. Naturally occurring Nickel ( Ni) is composed of 5 stable Isotopes 58Ni 60Ni 61Ni 62Ni and 64Ni Nickel (ˈnɪkəl is a metallic Chemical element with the symbol Ni and Atomic number 28 Copper ( Cu) has two stable isotopes 63Cu and 65Cu along with numerous radioisotopes Copper (ˈkɒpɚ is a Chemical element with the symbol Cu (cuprum and Atomic number 29 Naturally occurring Zinc ( Zn) is composed of the 5 stable Isotopes 64Zn 66Zn 67Zn 68Zn and 70Zn Zinc (ˈzɪŋk from Zink is a Metallic Chemical element with the symbol Zn and Atomic number 30 Iron-56 is the most common Isotope of Iron. About 91754% of all iron is iron-56 Gallium ( Ga)Standard atomic mass 69723(1 u Table Gallium (ˈgæliəm is a Chemical element that has the symbol Ga and Atomic number 31 Germanium ( Ge)Standard atomic mass 7264(1 u Table Cobalt-60 (60Co is a Radioactive isotope of Cobalt, with a Half life of 5 Germanium (dʒɚˈmeɪniəm is a Chemical element with the symbol Ge and Atomic number 32 Although Arsenic ( As) has multiple Isotopes, only one of these isotopes is stable as such it is considered a monoisotopic element Nickel-62 is an Isotope of Nickel with 28 Protons and 34 Neutrons It is a Stable isotope, and in fact has the highest Nuclear Arsenic (ˈɑrsənɪk is a Chemical element that has the symbol As and Atomic number of 33 Selenium ( Se) has six naturally occurring Isotopes five of which are stable 74Se 76Se 77Se 78Se and 80Se Selenium (səˈliniəm is a Chemical element with the Atomic number 34 represented by the chemical symbol Se, an atomic mass of 78 Bromine ( Br)Standard atomic mass 79904(1 u Table There are 31 known isotopes of Krypton ( Kr) Naturally occurring krypton is made of five stable and one slightly radioactive Isotope Krypton (ˈkrɪptən or /ˈkrɪptɒn/ from kryptos "hidden" is a Chemical element with the symbol Kr and Atomic number 36 Rubidium ( Rb) has 24 Isotopes with naturally occurring rubidium being composed of just two isotopes Rb-85 (72 Rubidium (ruːˈbɪdiəm /rəˈbɪdiəm/ is a Chemical element with the symbol Rb and Atomic number 37 The Alkali earth metal Strontium ( Sr) has four stable naturally occurring Isotopes 84Sr (0 Strontium (ˈstrɒntiəm /ˈstrɒnʃiəm/) is a Chemical element with the symbol Sr and the Atomic number 38 Natural Yttrium ( Y) is composed of only one Isotope (Y-89 The most stable Radioisotopes are Y-88 whichas a Half life of 106 Yttrium (ˈɪtriəm is a Chemical element with symbol Y and Atomic number 39 Naturally occurring Zirconium ( Zr) is composed of four stable isotopes and one extremely long-lived Radioisotope (96Zr which decays via Zirconium (zɚˈkoʊniəm /ˌzɝˈkoʊniəm/ is a Chemical element with the symbol Zr and Atomic number 40 Naturally occurring Niobium ( Nb) is composed of one stable Isotope (Nb-93 Niobium (naɪˈoʊbiəm or columbium (/kəˈlʌmbiəm/ is a Chemical element that has the symbol Nb and Atomic number 41 There are 35 known isotopes of Molybdenum ( Mo) ranging in Atomic mass from 83 to 117 as well as four metastable Nuclear isomers Seven isotopes Selenium-79 is a Radioisotope of Selenium present in Spent nuclear fuel and the wastes resulting from reprocessing this fuel Molybdenum (məˈlɪbdənəm from the Greek word for the metal " Lead " is a Group 6 Chemical element with the symbol Mo Technetium ( Tc) is one of the two elements in the first 82 that have no stable Isotopes (in fact it is the lowest-numbered element that is exclusively radioactive Technetium (tɛkˈniːʃɪəm is the lightest Chemical element with no Stable isotope. Naturally occurring Ruthenium ( Ru) is composed of seven stable Isotopes Additionally 34 radioactive isotopes have been discovered Ruthenium (ruːˈθiːniəm is a Chemical element that has the symbol Ru and Atomic number 44 Naturally occurring Rhodium ( Rh) is composed of only one Isotope, 103Rh Rh redirects here For other uses see Rh (disambiguation Rhodium (ˈroʊdiəm is a Chemical element with the symbol Naturally-occurring Palladium ( Pd) is composed of six Isotopes The most stable Radioisotopes are 107Pd with a Half-life Krypton 85 ( 85Kr) is a Radioisotope of Krypton. It decays into rubidium-85 with a Half-life of 10 Palladium (pronounced \pəˈleɪdiəm\ is a rare and lustrous silvery-white metal that was discovered in 1803 by William Hyde Wollaston, who named it palladium after the Naturally occurring Silver ( Ag) is composed of the two stable Isotopes 107Ag and 109Ag with 107Ag being the more abundant Silver (ˈsɪlvɚ is a Chemical element with the symbol " Ag " (argentum from the Ancient Greek: ἀργήντος - argēntos gen Naturally occurring Cadmium ( Cd) is composed of 8 Isotopes For two of them natural Radioactivity was observed and three others are predicted Cadmium (ˈkædmiəm is a Chemical element with the symbol Cd and Atomic number 48 Strontium-90 (90Sr is a Radioactive Isotope of Strontium, with a Half life of 28 Indium ( In)Standard atomic mass 114818(3 u Table 93Zr is a Radioisotope of Zirconium with a Half life of 153 million years decaying with a low-energy Beta particle to Niobium Indium (ˈɪndiəm is a Chemical element with chemical symbol In and Atomic number 49 Tin ( Sn) is the element with the greatest number of stable isotopes (ten which is probably related to the fact that 50 is a " magic number " of Tin is a Chemical element with the symbol Sn (stannum and Atomic number 50 Antimony ( Sb)Standard atomic mass 121760(1 u Table Antimony (IPA (Received Pronunciation, /ˈæntɪmoʊni/ (US is a Chemical element with the symbol Sb (stibium meaning "mark" and There are 30 known Isotopes of Tellurium ( Te) with Atomic masses that range from 108 to 137 Technetium-99 (99Tc is an isotope of Technetium which decays with a Half-life of 211000 years emitting soft beta rays but no gamma rays and has a Tellurium (tɪˈlʊəriəm/ /tɛl- is a Chemical element that has the symbol Te and Atomic number 52 There are 37 Isotopes of Iodine ( I) and only one 127I is stable Iodine (ˈaɪədaɪn ˈaɪədɪn or /ˈaɪədiːn/ from ιώδης iodes "violet" is a Chemical element that has the symbol I and Atomic Naturally occurring Xenon ( Xe) is made of nine stable Isotopes (124Xe 134Xe and 136Xe are predicted to undergo Xenon (ˈzɛnɒn or) is a Chemical element represented by the symbol Xe. Caesium ( Cs) has at least 39 known isotopes which is more than any other element except Francium. Caesium or cesium (ˈsiːziəm is the Chemical element with the symbol Cs and Atomic number 55 Naturally occurring Barium ( Ba) is a mix of seven stable Isotopes There are twenty-two isotopes known but most of these are highly Radioactive Palladium -107 is the second longest lived ( Halflife of 65 million years and least radioactive ( Decay energy only 33 KeV, Specific activity Barium (ˈbɛəriəm is a Chemical element. It has the symbol Ba, and Atomic number 56 Naturally occurring Lanthanum ( La) is composed of one stable (139La and one Radioactive (138La Isotope, with the stable Lanthanum (ˈlænθənəm is a Chemical element with the symbol La and Atomic number 57 Cadmium-113m is a Cadmium Radioisotope and Nuclear isomer with a Halflife of 14 Naturally occurring Cerium ( Ce) is composed of 3 stable Isotopes and 1 radioactive isotope 136Ce 138Ce 140Ce and 142Ce Cerium (ˈsɪəriəm is a Chemical element with the symbol Ce and Atomic number 58 Naturally occurring Praseodymium ( Pr) is composed of one stable Isotope, 141Pr Tin-121m is a radioisotope and Nuclear isomer of Tin with a Halflife of 43 Praseodymium (ˌpreɪzioʊˈdɪmiəm or /ˌpreɪsioʊˈdɪmiəm/ is a Chemical element that has the symbol Pr and Atomic number 59 Naturally occurring Neodymium ( Nd) is composed of 5 stable Isotopes 142Nd 143Nd 145Nd 146Nd and 148Nd Neodymium (ˌniːoʊˈdɪmiəm is a Chemical element with the symbol Nd and Atomic number 60 36 Radioisotopes of Promethium ( Pm) have been characterized with the most stable being 145Pm with a Half-life of 17 Naturally occurring Samarium ( Sm) is composed of 4 stable Isotopes 144Sm 150Sm 152Sm and 154Sm and 3 extremely Naturally occurring Europium is composed of 2 Isotopes 151Eu and 153Eu with 153Eu being the most abundant (52 Promethium (prəˈmiːθiəm/ /proʊˈmiːθiəm is a Chemical element with the symbol Pm and Atomic number 61 Samarium (səˈmɛəriəm is a Chemical element with the symbol Sm and Atomic number 62 Europium (jʊˈroʊpiəm is a Chemical element with the symbol Eu and Atomic number 63 Naturally occurring Gadolinium ( Gd) is composed of 5 stable Isotopes 154Gd 155Gd 156Gd 157Gd and 158Gd Tin-126 is a Radioisotope of Tin and one of only 7 long-lived Fission products While tin-126's Halflife of 230000 years translates to a Iodine-129 (129I is a Radioisotope of Iodine. Formation and decay 129I is primarily formed from the Fission Gadolinium (ˌgædəˈlɪniəm is a Chemical element that has the symbol Gd and Atomic number 64 Iodine-131 (131I, also called radioiodine, is a Radioisotope of Iodine which has medical and pharmaceutical uses Caesium -134 has a Half-life of 20652 years It is produced both directly (at a very small yield as a Fission product, but not via Beta decay of other Naturally occurring Terbium ( Tb) is composed of 1 stable Isotope, 159-Tb Naturally occurring Dysprosium ( Dy) is composed of 7 stable Isotopes 156-Dy 158-Dy 160-Dy 161-Dy 162-Dy 163-Dy and 164-Dy with 164-Dy being the most Natural Holmium ( Ho) contains one Stable Isotope, holmium 165 Naturally occurring Erbium ( Er) is composed of 6 stable Isotopes Er-162 Er-164 Er-166 Er-167 Er-168 and Er-170 with Er-166 being the most abundant Naturally occurring Thulium ( Tm) is composed of 1 stable Isotope, Tm-169 (100% Natural abundance) Caesium-135 is a Caesium Radioisotope with a Half-life of 23 million years undergoing low-energy Beta decay to Barium -135 Terbium (ˈtɝbiəm is a Chemical element with the symbol Tb and Atomic number 65 Holmium (ˈhoʊlmiəm is a Chemical element with the symbol Ho and Atomic number 67 Erbium (ˈɝbiəm is a Chemical element with the symbol Er and Atomic number 68 Thulium (ˈθjuːliəm is a Chemical element that has the symbol Tm and Atomic number 69 Naturally occurring Ytterbium ( Yb) is composed of 7 stable Isotopes Yb-168 Yb-170 Yb-171 Yb-172 Yb-173 Yb-174 and Yb-176 with Yb-174 being the most 135Xe is an isotope of Xenon, and a Fission product (yield 63333% which is the most powerful known Neutron -absorbing Nuclear poison and has Naturally occurring Lutetium ( Lu) is composed of 1 stable Isotope Lu-175 (97 Caesium-137 (also spelled cesium is a radioactive Isotope of Caesium which is formed mainly by Nuclear fission. Lutetium (ljuːˈtiːʃiəm is a Chemical element with the symbol Lu and Atomic number 71 149Sm is a stable isotope of Samarium, and a Fission product (yield 1 is a Radioisotope of Samarium with a Half-life of 90 years undergoing low-energy Beta decay, and has a Fission product yield of Europium-155 is a Radioisotope or Europium and Fission product with a Halflife of 4 Hafnium ( Hf)Standard atomic mass 17849(2 u Table Natural Tantalum ( Ta) consists of two Isotopes 180mTa (0012% and 181Ta (99 Naturally occurring Tungsten ( W) consists of five Isotopes whose half-lives are so long that they can be considered stable. Naturally occurring Rhenium ( Re) is 374% 185Re which is stable, and 62 Osmium ( Os) has seven naturally-occurring Isotopes 5 of which are stable 187Os 188Os 189Os 190Os and (most There are two natural Isotopes of Iridium ( Ir) and many Radioisotopes the most stable radioisotope being Ir-192 with a Half-life Platinum ( Pt)Standard atomic mass 195084(9 u Table Gold ( Au) has one stable Isotope, 197Au, and 18 Radioisotopes with 195Au being the most stable with There are seven stable Isotopes of mercury ( Hg) with Hg-202 being the most abundant (29 Hafnium (ˈhæfniəm is a Chemical element that has the symbol Hf and Atomic number 72 Tantalum (ˈtæntələm (formerly tantalium /tænˈtæliəm/ is a Chemical element with the symbol Ta and Atomic number 73 Tungsten (ˈtʌŋstən also known as wolfram (/ˈwʊlfrəm/ is a Chemical element that has the symbol W and Atomic number 74 Rhenium (ˈriːniəm is a Chemical element with the symbol Re and Atomic number 75 Osmium (ˈɒzmiəm is a Chemical element that has the symbol Os and Atomic number 76 Iridium (ɪˈrɪdiəm is a Chemical element that has the symbol Ir and Atomic number 77 Platinum (ˈplætɪnəm is a Chemical element with the Atomic symbol Pt and an Atomic number of 78 Gold (ˈɡoʊld is a Chemical element with the symbol Au (from its Latin name aurum) and Atomic number 79 Mercury (ˈmɜrkjʊri also called quicksilver or hydrargyrum, is a Chemical element with the symbol Hg ( Latinized hydrargyrum Thallium ( Tl) has 25 Isotopes which have Atomic masses that range from 184 to 210 Thallium (ˈθæliəm is a Chemical element with the symbol Tl and Atomic number 81 Lead ( Pb) has four stable Isotopes - 204Pb 206Pb 207Pb 208Pb and one common Radiogenic isotope Characteristics Lead has a dull luster and is a dense, Ductile, very soft highly Standard atomic mass 20898040(1 u Isotopes of Bismuth (Bi occurring within the radioactive Disintegration chains of Actinium Bismuth (ˈbɪzməθ is a Chemical element that has the symbol Bi and Atomic number 83 Polonium ( Po) has 33 known isotopes, all of which are radioactive. Polonium (pəˈloʊniəm is a Chemical element with the symbol Po and Atomic number 84 discovered in 1898 by Marie and Pierre Curie Astatine ( At) has 33 known Isotopes all of which are Radioactive; the range of their mass numbers is from 191 to 223 Astatine (ˈæstətiːn is a Radioactive Chemical element with the symbol At and Atomic number 85 There are thirty four known Isotopes of Radon ( Rn) The most stable isotope is 222Rn which is a Decay product (daughter product of Bismuth-209 is the most stable Isotope of Bismuth. It has 83 protons and 126 neutrons and an atomic mass of 208 Radon (ˈreɪdɒn is the Chemical element that has the symbol Rn and Atomic number 86 Francium ( Fr) has no stable Isotopes. A standard Atomic mass cannot be given Francium (ˈfrænsiəm formerly known as eka-caesium and actinium K, is a Chemical element that has the symbol Fr and Radium ( Ra) has no stable Isotopes A standard Atomic mass cannot be given Radium (ˈreɪdiəm is a radioactive Chemical element which has the symbol Ra and Atomic number 88 Actinium ( Ac) has no stable isotopes A standard atomic mass cannot be given Actinium (ækˈtɪniəm is a radioactive Chemical element with the symbol Ac and Atomic number 89 which was discovered in 1899, the earliest Although Thorium ( Th) has multiple Isotopes, none of these isotopes are stable however one isotope is relatively stable ( 232Th Thorium (ˈθɔːriəm is a Chemical element with the symbol Th and Atomic number 90 Protactinium ( Pa)Standard atomic mass 23103588(2 u The element has no stable isotopes Protactinium (ˌproʊtækˈtɪniəm is a Chemical element with the symbol Pa and Atomic number 91 Uranium ( U) is a naturally occurring element with no Stable isotopes In other words all uranium is Radioactive and hence vanishing by Radioactive Uranium (jʊˈreɪniəm is a silvery-gray Metallic Chemical element in the Neptunium ( Np) has no stable isotopes A standard atomic mass cannot be given Neptunium (nɛpˈtjuːniəm is a Chemical element with the symbol Np and Atomic number 93 Plutonium ( Pu) has no stable isotopes A standard atomic mass cannot be given Americium ( Am) has no stable Isotopes A standard atomic mass cannot be given Americium (ˌæməˈrɪsiəm is a Synthetic element that has the symbol Am and Atomic number 95 Curium ( Cm) has no stable isotopes A standard atomic mass cannot be given This article is about the chemical element Curium for the ancient city also called Curium (located in Cyprus see Kourion Curium (ˈkjuːriəm Berkelium ( Bk) has no stable isotopes A standard atomic mass cannot be given Californium ( Cf) has no stable isotopes A standard atomic mass cannot be given Einsteinium ( Es) has no stable isotopes A standard atomic mass cannot be given Fermium ( Fm) has no stable isotopes A standard atomic mass cannot be given Thorium-230 (230Th is a Radioactive Isotope of Thorium which can be used to date Corals and determine Ocean current Uranium 232 (92232 is an isotope of Uranium. It has a half life of 68 Bk redirects here For other uses of the abbreviation see BK (disambiguation. Californium (ˌkælɪˈforniəm is a Metallic Chemical element with the symbol Cf and Atomic number 98 Einsteinium (aɪnˈstaɪniəm is a Metallic Synthetic element. Fermium (ˈfɝmiəm is a Synthetic element with the symbol Fm and Atomic number 100 Uranium-233 is a Fissile artificial isotope of Uranium, which has been used in a few Nuclear reactors and has been proposed for much wider use as a Thorium-232 is the primary abundant Nuclide of Thorium. It is a slightly unstable Radionuclide that is found in the earth's crust Uranium-234 is an isotope of Uranium. In Natural uranium and uranium ore 234U occurs as an indirect Decay product of 238U Uranium-235 is an isotope of uranium that differs from the element's other common isotope Uranium-238, by its ability to cause a rapidly expanding fission Uranium-236 is an isotope of Uranium that is neither Fissile with Thermal neutrons nor very good Fertile material, but is generally considered Neptunium (nɛpˈtjuːniəm is a Chemical element with the symbol Np and Atomic number 93 Plutonium 238, is a Radioactive isotope of Plutonium with a half-life of 87 Mendelevium ( Md) has no stable isotopes A standard atomic mass cannot be given Plutonium-239 is an Isotope of Plutonium. Plutonium-239 is the primary Fissile isotope used for the production of Nuclear weapons although Mendelevium (ˌmɛndəˈlɛviəm is a Synthetic element with the symbol Md (formerly Mv) and the Atomic number 101 Nobelium ( No) has no stable isotopes A standard atomic mass cannot be given Uranium-238 (U-238 is the most common isotope of Uranium found in nature Plutonium-240 (Pu-240 is an Isotope of the Metal Plutonium formed when Plutonium-239 captures a Neutron. Americium ( Am) has no stable Isotopes A standard atomic mass cannot be given Nobelium (noʊˈbɛliəm or /noʊˈbiːliəm/ is a Synthetic element with the symbol No and Atomic number 102 Lawrencium ( Lr) has no stable isotopes due to its Radioactivity. Rutherfordium ( Rf) has no stable isotopes A standard atomic mass cannot be given though the atomic mass of the most stable isotope is approx Uranium-239 is an isotope of uranium. It is usually produced by exposing Uranium-238 to Neutron Radiation in a nuclear reactor Plutonium-241 (Pu-241 is an Isotope of Plutonium formed when Plutonium-240 captures a Neutron. Lawrencium (ləˈrɛnsiəm is a Radioactive Synthetic element with the symbol Lr (formerly Lw) and Atomic number 103 Rutherfordium (ˌrʌðɚˈfɔrdiəm is a Chemical element in the Periodic table that has the symbol Rf and Atomic number 104 Dubnium ( Db) has no stable isotopes A standard atomic mass cannot be given though the atomic mass of the most stable isotope is approx Plutonium ( Pu) has no stable isotopes A standard atomic mass cannot be given Dubnium (ˈduːbniəm is a Chemical element in the Periodic table that has the symbol Db and Atomic number 105 Seaborgium ( Sg) has no stable isotopes A standard atomic mass cannot be given though the atomic mass of the most stable isotope is approx See also Isotopes of plutonium Plutonium -244 has a Halflife of 80 million years Seaborgium (siːˈbɔrgiəm is a Chemical element in the Periodic table that has the symbol Sg and Atomic number 106 Image of Seaborgium Bohrium ( Bh) has no stable isotopes A standard atomic mass cannot be given though the atomic mass of the most stable isotope is approx Bohrium (ˈbɔəriəm is a Chemical element in the Periodic table that has the symbol Bh and Atomic number 107 Hassium ( Hs) has no stable isotopes A standard atomic mass cannot be given Hassium (ˈhæsiəm or /ˈhɑːsiəm/ is a Synthetic element in the Periodic table that has the symbol Hs and Atomic number 108 Meitnerium ( Mt) has no stable isotopes due to its high Radioactivity due to its status as an Transactinide. Meitnerium (maɪtˈnɜriəm is a Chemical element in the Periodic table that has the symbol Mt and Atomic number 109 Darmstadtium ( Ds) has no stable isotopes A standard atomic mass cannot be given Darmstadtium (dɑrmˈʃtætiəm formerly known as Ununnilium is a Chemical element with the symbol Ds and Atomic number 110 Roentgenium ( Rg) has no stable isotopes A standard atomic mass cannot be given Roentgenium (rɛntˈgɛniəm /rʌntˈdʒɛniəm/ is a Chemical element in the Periodic table that has the symbol Rg and Atomic number Ununbium ( Uub) has no stable isotopes A standard atomic mass cannot be given Ununtrium ( Uut) has no stable isotopes Table Ununtrium (juːˈnʌntriəm or /əˈnʌntriəm/ is the temporary name of a Synthetic element in the Periodic table that has the temporary symbol Uut and Ununquadium ( Uuq) has no stable Isotopes. A standard atomic mass cannot be given Ununquadium (ˌjuːnənˈkwɒdiəm or /ˌʌnənˈkwɒdiəm/ is the temporary name of a radioactive Chemical element in the Periodic table that has the Ununpentium ( Uup) has no stable isotopes A standard atomic mass cannot be given Ununpentium (ˌjuːnənˈpɛntiəm or /ˌʌnənˈpɛntiəm/ is the temporary name of a synthetic Superheavy element in the Periodic table that has the Ununhexium ( Uuh) has no stable isotopes A standard atomic mass cannot be given Ununhexium (ˌjuːnənˈhɛksiəm or /ˌʌnənˈhɛksiəm/ is the temporary name of a synthetic Superheavy element in the Periodic table that has the temporary Ununseptium ( Uus) has not yet been synthesized all data are theoretical Ununseptium (ˌjuːnənˈsɛptiəm or /ˌʌnənˈsɛptiəm/ is the temporary name of an undiscovered Chemical element in the Periodic table that has the temporary Ununoctium ( Uuo) was only very recently synthesized all data are theoretical Ununoctium (ˌjuːnəˈnɒktiəm or /ˌʌnəˈnɒktiəm/ also known as eka-radon or element 118, is the temporary IUPAC name for Brookhaven National Laboratory ( BNL) is a United States national laboratory located in Upton New York on Long Island, and was formally established

External links

An isotope table with clickable information on every isotope and its decay routes is available at chemlab.pc.maricopa.edu
An example of free Universal Nuclide Chart with decay information for over 3000 nuclides is available at Nucleonica.net.
Links to other charts of nuclides, including printed posters and journal articles, is available at nds.iaea.org.

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