Isotopes of Polonium (Z=84)

Click on an isotope to get more information about its decay
Isotope Half-life Spin Parity Decay Mode(s) or Abundance
190Po 2.0 ms 0+ %A=100, %EC+%B+=0.1 sys
191Po 15.5 ms %A=?
192Po 0.0332 s 0+ %A=100
193Po 0.42 s(3/2-) %A=?
193m1Po 0.24 s(13/2+) %A=?
194Po 0.392 s 0+ %A=93 7
195Po 4.64 s(3/2-) %A=75 15, %EC+%B+=25 15
195m1Po 1.92 s(13/2+) %A ~ 90, %EC+%B+ ~ 10, %IT < 0.01
196Po 5.8 s0+ %A ~ 98, %EC+%B+ ~ 2
197Po 53.6 s(3/2-) %EC+%B+=56 7, %A=44 7
197m1Po 25.8 s (13/2+) %A=84 9, %EC+%B+=16 9, %IT=0.01 sys
198Po 1.77 m0+ %A=57 2, %EC+%B+=43 2
199Po 5.48 m 3/2- %EC+%B+=88 2 , %A=12 2
199m1Po 4.13 m 13/2+ %EC+%B+=59 4 , %A=39 4 , %IT=2.1
200Po 11.5 m 0+ %A=11.1 3 , %EC+%B+=88.9 3
201Po 15.3 m 3/2- %EC+%B+=98.4 3, %A=1.6 3
201m1Po 8.9 m 13/2+ %IT=56 14, %EC=41 10, %A ~ 2.9
202Po 44.7 m 0+ %EC+%B+=98.08 7, %A=1.92 7
202m1Po 85 ns 8+
202m2Po 200 ns 11-
202m3Po 19 ns 12+
202m4Po 11 ns (15-)
203Po 36.7 m 5/2- %EC+%B+=99.89 2, %A=0.11 2
203m1Po 45 s 13/2+ %IT ~ 100 , %A ~ 0.04 sys
204Po 3.53 h 0+ %EC+%B+=99.34 1, %A=0.66 1
205Po 1.66 h 5/2- %EC+%B+=99.96 1, %A=0.04 1
205m1Po 58 ms 19/2- %IT=100
206Po 8.8 d 0+ %EC+%B+=94.55 5, %A=5.45 5
207Po 5.80 h 5/2- %EC+%B+=99.979 2, %A=0.021 2
207m1Po 2.8 s 19/2- %IT=100
208Po 2.898 y 0+ %A=99.9958 4, %EC+%B+=0.0042 4
209Po 102 y 1/2- %A=99.52 4, %EC+%B+=0.48 4
210Po 138.376 d 0+ %A=100
211Po 0.516 s 9/2+ %A=100
211m1Po 25.2 s(25/2+) %A=99.984 4, %IT=0.016 4
212Po 0.299 us 0+ %A=100
212m1Po 45.1 s (18+) %A=99.93 2, %IT=0.07 2
213Po 4.2 us 9/2+ %A=100
214Po 164.3 us 0+ %A=100
215Po 1.781 ms 9/2+ %A=99.99977 2, %B-=2.3E-4 2
216Po 0.145 s 0+ %A=100
217Po 10 s %A > 95, %B- < 5
218Po 3.10 m 0+ %A=99.980 2 , %B-=0.020 2
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
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Lawrence Berkeley National Laboratory
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