Polonium Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
188Po | 187.999422 (21) |
| 430 | us | -538 (19) | 7,724.6 (1) | A | ? |
189Po | 188.998481 (24) |
| 5 | ms | -1,415 (22) | 7,731.1 (1.2) | A | ? |
190Po | 189.995101 (14) |
| 2.46 | ms | -4,563 (13) | 7,749.45 (7.1) | A~100 |
|
191Po | 190.994574 (12) |
| 22 | ms | -5,054 (11) | 7,753.71 (5.8) | A~100 |
|
192Po | 191.991335 (13) |
| 32.2 | ms | -8,071 (12) | 7,771.08 (6.2) | A | ? |
193Po | 192.991025 (37) |
| 420 | ms | -8,360 (35) | 7,774.1 (1.8) | A | ? |
194Po | 193.988186 (13) |
| 392 | ms | -11,005 (13) | 7,789.30 (6.5) | A~100 |
|
195Po | 194.988111 (42) |
| 4.64 | s | -11,075 (39) | 7,791.1 (2) | A | 75 15 |
196Po | 195.985535 (14) |
| 5.56 | s | -13,474 (13) | 7,804.77 (6.6) | A | 94 5 |
197Po | 196.985660 (53) |
| 53.6 | s | -13,358 (50) | 7,805.5 (2.5) | B+ ? |
|
198Po | 197.983389 (19) |
| 1.77 | m | -15,473 (17) | 7,817.56 (8.8) | A | 57 2 |
199Po | 198.983666 (25) |
| 5.48 | m | -15,215 (23) | 7,817.5 (1.2) | B+ | 92.5 3 |
200Po | 199.981799 (15) |
| 11.5 | m | -16,954 (14) | 7,827.50 (7.2) | B+ | 88.9 3 |
201Po | 200.9822598 (63) |
| 15.3 | m | -16,524.9 (5.8) | 7,826.58 (2.9) | B+ | 98.4 3 |
202Po | 201.980758 (16) |
| 44.7 | m | -17,924 (15) | 7,834.72 (7.3) | B+ | ? |
203Po | 202.981420 (28) |
| 36.7 | m | -17,307 (26) | 7,832.8 (1.3) | B+~100 |
|
204Po | 203.980318 (12) |
| 3.53 | h | -18,334 (11) | 7,839.05 (5.4) | B+ | 99.34 1 |
205Po | 204.981203 (21) |
| 1.66 | h | -17,509 (20) | 7,836.16 (9.7) | B+~100 |
|
206Po | 205.9804811 (89) |
| 8.8 | d | -18,181.7 (8.3) | 7,840.56 (4) | B+ | 94.55 5 |
207Po | 206.9815932 (71) |
| 5.8 | h | -17,145.8 (6.6) | 7,836.67 (3.2) | B+~100 | |
208Po | 207.9812457 (19) |
| 2.898 | y | -17,469.5 (1.8) | 7,839.357 (9) | A~100 |
|
209Po | 208.9824304 (20) |
| 102 | y | -16,365.9 (1.8) | 7,835.187 (9) | A~100 |
|
210Po | 209.9828737 (13) |
| 138.376 | d | -15,953.1 (1.2) | 7,834.345 (6) | A | 100 |
211Po | 210.9866532 (14) |
| 516 | ms | -12,432.5 (1.3) | 7,818.783 (6) | A | 100 |
212Po | 211.9888680 (13) |
| 299 | ns | -10,369.4 (1.2) | 7,810.243 (6) | A | 100 |
213Po | 212.9928573 (33) |
| 4.2 | us | -6,653.4 (3.1) | 7,794.02 (1.5) | A | 100 |
214Po | 213.9952014 (16) |
| 164.3 | us | -4,469.9 (1.5) | 7,785.115 (7) | A | 100 |
215Po | 214.9994200 (27) |
| 1.781 | ms | -540.3 (2.5) | 7,768.17 (1.2) | A | 100 |
216Po | 216.0019150 (24) |
| 145 | ms | 1,783.8 (2.2) | 7,758.81 (1) | A | 100 |
217Po | 217.0063348 (71) |
| 1.47 | s | 5,900.8 (6.6) | 7,741.28 (3.1) | A>95 |
|
218Po | 218.0089730 (26) |
| 3.1 | m | 8,358.3 (2.4) | 7,731.52 (1.1) | A~100 |
|
219Po | 219.01374 (39) |
| 2 | m | 12,800 (360) | 7,713 (2) | B- ? |
|
220Po | 220.01660 (39) |
| 40 | s | 15,470 (360) | 7,702 (2) | B- ? |
|
191mPo | 190.994574 (12) |
| 98 | ms | -5,054 (11) | 7,753.71 (5.8) | A~100 |
|
192mPo | 191.991335 (13) |
| ~1 | us | -8,071 (12) | 7,771.08 (6.2) | IT | 100 |
193mPo | 192.991025 (37) |
| 240 | ms | -8,360 (35) | 7,774.1 (1.8) | A | ? |
194mPo | 193.988186 (13) |
| 15 | us | -11,005 (13) | 7,789.30 (6.5) | IT | 100 |
195mPo | 194.988111 (42) |
| 1.92 | s | -11,075 (39) | 7,791.1 (2) | A~90 |
|
196mPo | 195.985535 (14) |
| 850 | ns | -13,474 (13) | 7,804.77 (6.6) | IT | 100 |
197mPo | 196.985660 (53) |
| 25.8 | s | -13,358 (50) | 7,805.5 (2.5) | A | 84 9 |
198mPo | 197.983389 (19) |
| 29 | ns | -15,473 (17) | 7,817.56 (8.8) | IT | 100 |
199mPo | 198.983666 (25) |
| 4.17 | m | -15,215 (23) | 7,817.5 (1.2) | B+ | 73.5 10 |
201mPo | 200.9822598 (63) |
| 8.9 | m | -16,524.9 (5.8) | 7,826.58 (2.9) | IT | 56 14 |
202mPo | 201.980758 (16) |
| >200 | ns | -17,924 (15) | 7,834.72 (7.3) | IT | 100 |
203mPo | 202.981420 (28) |
| 45 | s | -17,307 (26) | 7,832.8 (1.3) | IT~100 |
|
205mPo | 204.981203 (21) |
| 58 | ms | -17,509 (20) | 7,836.16 (9.7) | IT | 100 |
206mPo | 205.9804811 (89) |
| 222 | ns | -18,181.7 (8.3) | 7,840.56 (4) | IT | 100 |
207mPo | 206.9815932 (71) |
| 2.79 | s | -17,145.8 (6.6) | 7,836.67 (3.2) | IT | 100 |
210mPo | 209.9828737 (13) |
| 98.9 | ns | -15,953.1 (1.2) | 7,834.345 (6) | IT | 100 |
211mPo | 210.9866532 (14) |
| 25.2 | s | -12,432.5 (1.3) | 7,818.783 (6) | A~100 |
|
212mPo | 211.9888680 (13) |
| 45.1 | s | -10,369.4 (1.2) | 7,810.243 (6) | A~100 |
|
198m1Po | 197.983389 (19) |
| 200 | ns | -15,473 (17) | 7,817.56 (8.8) | IT | 100 |
205m1Po | 204.981203 (21) |
| 645 | us | -17,509 (20) | 7,836.16 (9.7) | 0 |
|
206m1Po | 205.9804811 (89) |
| 1.05 | us | -18,181.7 (8.3) | 7,840.56 (4) | IT | 100 |
207m1Po | 206.9815932 (71) |
| 49 | us | -17,145.8 (6.6) | 7,836.67 (3.2) | 0 |
|
211m1Po | 210.9866532 (14) |
| 0.25 | us | -12,432.5 (1.3) | 7,818.783 (6) | IT~100 |
|
198m2Po | 197.983389 (19) |
| 750 | ns | -15,473 (17) | 7,817.56 (8.8) | IT ? |
|
211m2Po | 210.9866532 (14) |
| 2 | us | -12,432.5 (1.3) | 7,818.783 (6) | IT~100 |
|
Data Source: ENSDF March 2005
©Radiochemistry Society 2005