Isotope lists, 97+

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For an overview of available graphical representations, see Table of nuclides.

The tables listed below provide information on the basic properties of all nuclides.

Neutron + Element 1 (Hydrogen) - Element 24 (Chromium)
Element 25 (Manganese) - Element 48 (Cadmium)
Element 49 (Indium) - Element 72 (Hafnium)
Element 73 (Tantalum) - Element 96 (Curium)
Element 97 (Berkelium) and greater

This is a pictorial periodic chart to assist in choosing the desired table from the selections above. Clicking on this chart takes you to a larger image; it does not link to the table selections.

Legend


α	Alpha decay
β-	Beta decay
β+	Positron emission
K+	Electron capture
IT	Internal conversion
SF	Spontaneous fission
p	Proton emission
n	Neutron emission

1 Berkelium
2 Californium
3 Einsteinium
4 Fermium
5 Mendelevium
6 Nobelium
7 Lawrencium
8 Rutherfordium
9 Dubnium
10 Seaborgium
11 Bohrium
12 Hassium
13 Meitnerium
14 Darmstadtium
15 Roentgenium
16 Ununbium
17 Ununquadium

[edit] Berkelium

Main article: Isotopes of berkelium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
238Bk	144 s		%K+%β+=100, %KSF=0.048
239Bk		(7/2+ )
240Bk	4.8 m		%K+%β+=100, %KSF=1E-3 sys
241Bk		(7/2+ )
242Bk	7.0 m		%K+%β+=100
242m1Bk	9.5 ns
242m2Bk	0.60 μs
243Bk	4.5 h	(3/2- )	%K ~ 99.85, %α ~ 0.15
243m1Bk	5 ns
244Bk	4.35 h	(1- )	%K=99.994 , %α=0.006
245Bk	4.94 d	3/2-	%K=99.88 , %α=0.12
245m1Bk	2 ns
246Bk	1.80 d	2(-)	%K=100, %α<0.2 sys
247Bk	1380 a	(3/2- )	%α < 100
248Bk	9 a	(6+)	%α>70
248m1Bk	23.7 h	1(-)	%β-=70 , %K=30 , %α<0.001
249Bk	320 d	7/2+	%β-=99.99855 , %α=0.00145 , %SF=4.76E-8
250Bk	3.217 h	2-	%β-=100
251Bk	55.6 m	(3/2- )	%β-=100, %α ~ 1E-5

[edit] Californium

Main article: Isotopes of californium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
237Cf	2.1 s		%SF ~ 10 sys
238Cf	21 ms	0+	%SF ~ 100 sys
239Cf	39 s		%α=?
240Cf	1.06 m	0+	%α=87 , %SF ~ 13
241Cf	3.78 m		%K ~ 75, %α ~ 25
242Cf	3.49 m	0+	%α=65 , %SF < 1.4E-2
243Cf	10.7 m	(1/2+ )	%K ~ 86, %α ~ 14
244Cf	19.4 m	0+	%α=70
245Cf	45.0 m	(5/2+ )	%K=64 , %α=36
246Cf	35.7 h	0+	%α=99.9996 , %SF=2.3E-4 , %K<5E-4
246m1Cf	45 ns
247Cf	3.11 h	(7/2+ )	%K=99.965 , %α=0.035
248Cf	333.5 d	0+	%α=99.9971 , %SF=0.0029
249Cf	351 a	9/2-	%α=100, %SF=4.4E-7
250Cf	13.08 a	0+	%α=99.923 , %SF=0.077
251Cf	898 a	1/2+	%α=100
252Cf	2.645 a	0+	%α=96.908 , %SF=3.092
253Cf	17.81 d	(7/2+ )	%β-=99.69 , %α=0.31
254Cf	60.5 d	0+	%SF=99.69 , %α=0.31
255Cf	85 m	(9/2+ )	%β-=100
256Cf	12.3 m	0+	%SF=100, %β-<1 sys %α ~ 1E-6 sys

[edit] Einsteinium

Main article: Isotopes of einsteinium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
241Es	9 s		%α=100
242Es	40 s		%α ~ 100, %KSF=1.4
243Es	21 s		%K < 70, %α > 30
244Es	37 s		%K=96 , %α=4 , %KSF=0.01 sys
245Es	1.1 m	(3/2- )	%K=60 , %α=40
246Es	7.7 m	(4-,6+)	%K=90.1 , %α=9.9 , %KSF=0.003 sys
247Es	4.55 m	(7/2+ )	%K ~ 93, %α ~ 7
248Es	27 m	(2-,0+ )	%K>99, %α ~ 0.25, %KSF=3E-5 sys
249Es	102.2 m	7/2(+)	%K=99.43 , %α=0.57
250Es	8.6 h	(6+)	%K > 97, %α < 3 sys
250m1Es	2.22 h	1(-)	%K > 99, %α < 1 sys
251Es	33 h	(3/2- )	%K=99.51 , %α=0.49
252Es	471.7 d	(5-)	%α=76 , %K=24 , %β- ~ 0.01
253Es	20.47 d	7/2+	%α=100, %SF=8.9E-6
254Es	275.7 d	(7+)	%α=100, %K<1E-4, %β-=1.74E-6 , %SF<3E-6
254m1Es	39.3 h	2+	%β-=98 , %α=0.33 , %IT<3, %K=0.078 , %SF<0.045
255Es	39.8 d	(7/2+ )	%β-=92.0 , %α=8.0 , %SF=0.0045
256Es	25.4 m	(1+ )	%β-=100
256m1Es	7.6 h	(8+)	%β- ~ 100, %β-SF=0.002

[edit] Fermium

Main article: Isotopes of fermium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
242Fm	0.8 ms	0+	%SF=100
243Fm	0.18 s		%α < 100, %SF < 0.5, %K=?
244Fm	3.3 ms	0+	%SF=100
245Fm	4.2 s		%α=100, %SF < 0.11
246Fm	1.1 s	0+	%α=92 , %SF=7.3 , %K<1 sys
247Fm	35 s		%α > 50, %K+%β+ < 50
247m1Fm	9.2 s		%α < 100
248Fm	36 s	0+	%α=93 , %K ~ 7, %SF=0.10
249Fm	2.6 m	(7/2+ )	%K ~ 85 sys %α ~ 15 sys
250Fm	30 m	0+	%α>90, %K<10, %SF=0.0069
250m1Fm	1.8 s		%IT>80, %SF < 8E-5
251Fm	5.30 h	(9/2- )	%K=98.20 , %α=1.80
252Fm	25.39 h	0+	%α=99.9977 , %SF=0.00232
253Fm	3.00 d	1/2+	%K=88 , %α=12
254Fm	3.240 h	0+	%α=99.9408 , %SF=0.0592
255Fm	20.07 h	7/2+	%α=100, %SF=2.3E-5
256Fm	157.6 m	0+	%SF=91.9 , %α=8.1
257Fm	100.5 d	(9/2+ )	%α=99.790 , %SF=0.210
258Fm	370 μs	0+	%SF=100
259Fm	1.5 s		%SF=100

[edit] Mendelevium

Main article: Isotopes of mendelevium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
245Md	0.35 s	(7/2)	%α=100
245m1Md	0.90 ms	(1/2- )
246Md	1.0 s		%α=100
247Md	1.12 s		%α=80 , %SF=20
248Md	7 s		%K=80 , %α=20 , %SF < 0.05
249Md	24 s		%K=80 , %α=20
250Md	52 s		%K=93 , %α=7 , %KSF=0.02 sys
251Md	4.0 m		%K > 90, %α < 10
252Md	2.3 m		%K>50, %α<50
253Md	6 m		%K+%β+=100
254Md	10 m		%K < 100
254m1Md	28 m		%K < 100
255Md	27 m	(7/2- )	%K=92 , %α=8 , %SF < 1.4
256Md	78.1 m	(0-,1- )	%K=90.7 , %α=9.3 , %SF < 2.8
257Md	5.52 h	(7/2- )	%K=85 , %α=15 , %SF<1
258Md	51.5 d	(8-)	%α=100, %SF < 0.003, %β- < 0.003, %K < 0.003
258m1Md	57.0 m	(1- )	%K > 70, %SF < 30, %α < 1.2, %β- < 30
259Md	96 m	(7/2- )	%SF ~ 100, %α<1.3
260Md	27.8 d		%SF>73, %α < 25, %β- < 10

[edit] Nobelium

Main article: Isotopes of nobelium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
250No	0.25 ms	0+	%SF=100, %α ~ 0.05 sys
251No	0.8 s		%α ~ 100, %K ~ 1 sys%SF < 8
252No	2.30 s	0+	%α=73.1 , %SF=26.9
253No	1.7 m	(9/2- )	%α ~ 80, %K ~ 20 sys
254No	55 s	0+	%α=90 , %K=10 , %SF=0.17
254m1No	0.28 s		%IT>80
255No	3.1 m	(1/2+ )	%α=61.4 , %K=38.6
256No	2.91 s	0+	%α=99.5 , %SF=0.53 +8-4
257No	25 s	(7/2+ )	%α ~ 100
258No	1.2 ms	0+	%SF=100, %α ~ 1E-3 sys
259No	58 m	(9/2+ )	%α=75 , %K=25 , %SF<10
260No	106 ms	0+	%SF=100
261No
262No	5 ms	0+	%SF=?

[edit] Lawrencium

Main article: Isotopes of lawrencium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
253Lr	1.3 s		%α=98 , %K ~ 1 sys%SF < 1
254Lr	13 s		%α=78 , %K=22 , %SF < 0.16
255Lr	22 s		%α=85 , %K<30, %SF<0.10
256Lr	28 s		%α>80, %K<20, %SF<0.026
257Lr	0.646 s	(9/2+ )	%α=100, %SF < 6.5E-4
258Lr	3.9 s		%α>95, %K<5, %SF < 5.0
259Lr	6.3 s		%α=77 , %SF=23 , %K<0.5
260Lr	180 s		%α=75 , %K=25
261Lr	39 m		%SF < 100
262Lr	216 m		%SF<10

[edit] Rutherfordium

Main article: Isotopes of rutherfordium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
253Rf	1.8 s		%SF ~ 50, %α ~ 50
253m1Rf	50 μs
254Rf	0.5 ms	0+	%SF=100, %α ~ 0.3 sys
254m1Rf	23 μs
255Rf	1.5 s	(9/2- )	%SF=52 , %α=48
256Rf	6.7 ms	0+	%SF=98 +2- 7 , %α=2.2 +73-18
257Rf	4.7 s	(7/2+ )	%α=79.6 , %K=18 , %SF=2.4
258Rf	12 ms	0+	%SF ~ 87, %α ~ 13
259Rf	3.1 s		%α=93 , %SF=7 , %K ~ 0.3
260Rf	20.1 ms	0+	%SF=100
261Rf	65 s		%α>80, %SF<10, %K < 10 sys
262Rf	2.1 s	0+	%SF=100
262m1Rf	47 ms	[2+ ]

[edit] Dubnium

Main article: Isotopes of dubnium

Isotope	Half-life	Mode(s) or Abundance
255Db	1.6 s	%α>47, %SF < 53
256Db	2.6 s	%SF < 40, %α ~ 70, %K ~ 10 sys
257Db	1.3 s	%α=82 , %SF=17 , %K=1 sys
258Db	4.4 s	%α=67 +5-9 , %K=33 +9-5, %SF<34
258m1Db	20 s	%K ~ 100
259Db
260Db	1.52 s	%α > 90.4 , %SF ~ 9.6 , %K<2.5
261Db	1.8 s	%α>50, %SF<50
262Db	34 s	%α ~ 64, %SF ~ 33, %K ~ 3 sys
263Db	27 s	%SF=57 , %α=43

[edit] Seaborgium

Main article: Isotopes of seaborgium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
258Sg	2.9 ms	0+	%SF=100
259Sg	0.48 s	(1/2+ )	%α=90 , %SF < 20
260Sg	3.6 ms	0+	%α=50 +30-20 , %SF=50 +20-30
261Sg	0.23 s		%α=95 , %SF<10
262Sg		0+
263Sg	0.8 s		%SF ~ 70, %α ~ 30
263m1Sg	0.31 s	[9/2+]
264Sg		0+
265Sg	10 s	[1/2+ ]	%α>50, %SF<50
266Sg	21 s	0+	%α=50 , %SF=50

[edit] Bohrium

Main article: Isotopes of bohrium

Isotope	Half-life	Mode(s) or Abundance
261Bh	11.8 ms	%α=95 , %SF<10
262Bh	102 ms	%α > 80, %SF < 20
262m1Bh	8.0 ms	%α > 70, %SF < 30
263Bh
264Bh	0.44 s	%α=100

[edit] Hassium

Main article: Isotopes of hassium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
264Hs	0.85 ms	0+	%α ~ 100, %SF < 1.5
265Hs	0.9 ms		%α=?
265m1Hs	1.55 ms	[1/2+ ]	%α ~ 100, %SF<9
266Hs		0+
267Hs	26 ms	[9/2+ ]	%α=100
268Hs		0+
269Hs	9 s	[3/2+ ]	%α=100

[edit] Meitnerium

Main article: Isotopes of meitnerium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
266Mt	0.8 ms		%α=100
266m1Mt	3.8 ms		%α=100, %SF < 5.5
267Mt
268Mt	0.07 s	[5+,6+]	%α=100

[edit] Darmstadtium

Main article: Isotopes of darmstadtium

Isotope	Half-life	Spin Parity	Mode(s) or Abundance
267Ds	3 μs	[11/2- ]	%α=100
268Ds		0+
269Ds	0.17 ms	[1/2+ ]	%α=100
270Ds		0+
271Ds	0.06 s	[3/2+ ]	%α=100
271m1Ds	1.1 ms	[9/2+ ]	%α=100
272Ds		0+
273Ds	0.18 ms	[3/2+ ]	%α=100
273m1Ds	120 ms	[13/2- ]	%α=100