Isotopes of Selenium (Z=34)

Click on an isotope to get more information about its decay
Isotope Half-life Spin Parity Decay Mode(s) or Abundance
65Se %EC+%B+=100, %ECP=?
66Se 0+ %EC+%B+=100
67Se 60 ms %EC+%B+=100, %ECP=0.5 1
68Se 35.5 s0+ %EC+%B+=100
69Se 27.4 s(3/2-) %EC+%B+=100, %ECP=0.045 10
70Se 41.1 m0+ %EC+%B+=100
71Se 4.74 m3/2-,5/2- %EC+%B+=100
72Se 8.40 d0+ %EC=100
73Se 7.15 h9/2+ %EC+%B+=100
73m1Se 39.8 m3/2- %EC+%B+=27.4 3, %IT=72.6 3
74Se stable 0+ %Abundance=0.89 2
75Se 119.779 d 5/2+ %EC=100
76Se stable 0+ %Abundance=9.36 11
77Se stable 1/2- %Abundance=7.63 6
77m1Se 17.36 s 7/2+ %IT=100
78Se stable 0+ %Abundance=23.78 9
79Se 1.13e6 y 7/2+ %B-=100
79m1Se 3.92 m 1/2- %IT=99.944 11, %B-=0.056 11
80Se stable 0+ %Abundance=49.61 10
81Se 18.45 m1/2- %B-=100
81m1Se 57.28 m7/2+ %IT=99.948 14, %B-=0.052 14
82Se 1.08e+20 y0+ %Abundance=8.73 6, %BB=100
83Se 22.3 m9/2+ %B-=100
83m1Se 70.1 s1/2- %B-=100
84Se 3.10 m0+ %B-=100
85Se 31.7 s(5/2+) %B-=100
86Se 15.3 s0+ %B-=100
87Se 5.29 s(5/2+) %B-=100, %B-N=0.36 8
88Se 1.53 s0+ %B-=100, %B-N=0.99 10
89Se 0.41 s(5/2+) %B-=100, %B-N=7.8 25
90Se 0+
91Se 0.27 s %B-=100, %B-N=21 10
92Se 0+ %B-=?
93Se (1/2+) %B-=?
94Se 0+ %B-=?
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory
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