Table
| nuclide symbol |
historic name |
Z(p) | N(n) | isotopic mass (u) |
half-life | decay mode(s) |
daughter isotope(s) |
nuclear spin |
representative isotopic composition (mole fraction) |
range of natural variation (mole fraction) |
|---|---|---|---|---|---|---|---|---|---|---|
| excitation energy | ||||||||||
| 188Po | 84 | 104 | 187.999422(21) | 430(180) µs |
0+ | |||||
| 189Po | 84 | 105 | 188.998481(24) | 5(1) ms | 3/2-# | |||||
| 190Po | 84 | 106 | 189.995101(14) | 2.46(5) ms | α (99.9%) | 186Pb | 0+ | |||
| β+ (.1%) | 190Bi | |||||||||
| 191Po | 84 | 107 | 190.994574(12) | 22(1) ms | α | 187Pb | 3/2-# | |||
| β+ (rare) | 191Bi | |||||||||
| 191mPo | 130(21) keV | 93(3) ms | (13/2+) | |||||||
| 192Po | 84 | 108 | 191.991335(13) | 32.2(3) ms | α (99%) | 188Pb | 0+ | |||
| β+ (1%) | 192Bi | |||||||||
| 192mPo | 2600(500)# keV | ~1 µs | 12+# | |||||||
| 193Po | 84 | 109 | 192.99103(4) | 420(40) ms |
α | 189Pb | 3/2-# | |||
| β+ (rare) | 193Bi | |||||||||
| 193mPo | 100(30)# keV | 240(10) ms |
α | 189Pb | (13/2+) | |||||
| β+ (rare) | 193Bi | |||||||||
| 194Po | 84 | 110 | 193.988186(13) | 0.392(4) s | α | 190Pb | 0+ | |||
| β+ (rare) | 194Bi | |||||||||
| 194mPo | 2525(2) keV | 15(2) µs | (11-) | |||||||
| 195Po | 84 | 111 | 194.98811(4) | 4.64(9) s | α (75%) | 191Pb | 3/2-# | |||
| β+ (25%) | 195Bi | |||||||||
| 195mPo | 110(50) keV | 1.92(2) s | α (90%) | 191Pb | 13/2+# | |||||
| β+ (10%) | 195Bi | |||||||||
| IT (.01%) | 195Po | |||||||||
| 196Po | 84 | 112 | 195.985535(14) | 5.56(12) s | α (94%) | 192Pb | 0+ | |||
| β+ (6%) | 196Bi | |||||||||
| 196mPo | 2490.5(17) keV | 850(90) ns | (11-) | |||||||
| 197Po | 84 | 113 | 196.98566(5) | 53.6(10) s | β+ (54%) | 197Bi | (3/2-) | |||
| α (44%) | 193Pb | |||||||||
| 197mPo | 230(80)# keV | 25.8(1) s | α (84%) | 193Pb | (13/2+) | |||||
| β+ (16%) | 197Bi | |||||||||
| IT (.01%) | 197Po | |||||||||
| 198Po | 84 | 114 | 197.983389(19) | 1.77(3) min | α (57%) | 194Pb | 0+ | |||
| β+ (43%) | 198Bi | |||||||||
| 198m1Po | 2565.92(20) keV | 200(20) ns | 11- | |||||||
| 198m2Po | 2691.86(20) keV | 750(50) ns | 12+ | |||||||
| 199Po | 84 | 115 | 198.983666(25) | 5.48(16) min | β+ (92.5%) | 199Bi | (3/2-) | |||
| α (7.5%) | 195Pb | |||||||||
| 199mPo | 312.0(28) keV | 4.17(4) min | β+ (73.5%) | 199Bi | 13/2+ | |||||
| α (24%) | 195Pb | |||||||||
| IT (2.5%) | 199Po | |||||||||
| 200Po | 84 | 116 | 199.981799(15) | 11.5(1) min | β+ (88.8%) | 200Bi | 0+ | |||
| α (11.1%) | 196Pb | |||||||||
| 201Po | 84 | 117 | 200.982260(6) | 15.3(2) min | β+ (98.4%) | 201Bi | 3/2- | |||
| α (1.6%) | 197Pb | |||||||||
| 201mPo | 424.1(24) keV | 8.9(2) min | IT (56%) | 201Po | 13/2+ | |||||
| EC (41%) | 201Bi | |||||||||
| α (2.9%) | 197Pb | |||||||||
| 202Po | 84 | 118 | 201.980758(16) | 44.7(5) min | β+ (98%) | 202Bi | 0+ | |||
| α (2%) | 198Pb | |||||||||
| 202mPo | 2626.7(7) keV | >200 ns | 11- | |||||||
| 203Po | 84 | 119 | 202.981420(28) | 36.7(5) min | β+ (99.89%) | 203Bi | 5/2- | |||
| α (.11%) | 199Pb | |||||||||
| 203m1Po | 641.49(17) keV | 45(2) s | IT (99.96%) | 203Po | 13/2+ | |||||
| α (.04%) | 199Pb | |||||||||
| 203m2Po | 2158.5(6) keV | >200 ns | ||||||||
| 204Po | 84 | 120 | 203.980318(12) | 3.53(2) h | β+ (99.33%) | 204Bi | 0+ | |||
| α (.66%) | 200Pb | |||||||||
| 205Po | 84 | 121 | 204.981203(21) | 1.66(2) h | β+ (99.96%) | 205Bi | 5/2- | |||
| α (.04%) | 201Pb | |||||||||
| 205m1Po | 143.166(17) keV | 310(60) ns | 1/2- | |||||||
| 205m2Po | 880.30(4) keV | 645 µs | 13/2+ | |||||||
| 205m3Po | 1461.21(21) keV | 57.4(9) ms | IT | 205Po | 19/2- | |||||
| 205m4Po | 3087.2(4) keV | 115(10) ns | 29/2- | |||||||
| 206Po | 84 | 122 | 205.980481(9) | 8.8(1) d | β+ (94.55%) | 206Bi | 0+ | |||
| α (5.45%) | 202Pb | |||||||||
| 206m1Po | 1585.85(11) keV | 222(10) ns | (8+)# | |||||||
| 206m2Po | 2262.22(14) keV | 1.05(6) µs | (9-)# | |||||||
| 207Po | 84 | 123 | 206.981593(7) | 5.80(2) h | β+ (99.97%) | 207Bi | 5/2- | |||
| α (.021%) | 203Pb | |||||||||
| 207m1Po | 68.573(14) keV | 205(10) ns | 1/2- | |||||||
| 207m2Po | 1115.073(16) keV | 49(4) µs | 13/2+ | |||||||
| 207m3Po | 1383.15(6) keV | 2.79(8) s | IT | 207Po | 19/2- | |||||
| 208Po | 84 | 124 | 207.9812457(19) | 2.898(2) a | α (99.99%) | 204Pb | 0+ | |||
| β+ (.00277%) | 208Bi | |||||||||
| 209Po | 84 | 125 | 208.9824304(20) | 102(5) a | α (99.52%) | 205Pb | 1/2- | |||
| β+ (.48%) | 209Bi | |||||||||
| 210Po | Radium F | 84 | 126 | 209.9828737(13) | 138.376(2) d | α | 206Pb | 0+ | Trace | |
| 210mPo | 5057.61(4) keV | 263(5) ns | 16+ | |||||||
| 211Po | Actinium C' | 84 | 127 | 210.9866532(14) | 0.516(3) s | α | 207Pb | 9/2+ | Trace | |
| 211m1Po | 1462(5) keV | 25.2(6) s | α (99.98%) | 207Pb | (25/2+) | |||||
| IT (.016%) | 211Po | |||||||||
| 211m2Po | 2135.7(9) keV | 243(21) ns | (31/2-) | |||||||
| 211m3Po | 4873.3(17) keV | 2.8(7) µs | (43/2+) | |||||||
| 212Po | Thorium C' | 84 | 128 | 211.9888680(13) | 299(2) ns | α | 208Pb | 0+ | Trace | |
| 212mPo | 2911(12) keV | 45.1(6) s | α (99.93%) | 208Pb | (18+) | |||||
| IT (.07%) | 212Po | |||||||||
| 213Po | 84 | 129 | 212.992857(3) | 3.65(4) µs | α | 209Pb | 9/2+ | |||
| 214Po | Radium C' | 84 | 130 | 213.9952014(16) | 164.3(20) µs | α | 210Pb | 0+ | Trace | |
| 215Po | Actinium A | 84 | 131 | 214.9994200(27) | 1.781(4) ms | α (99.99%) | 211Pb | 9/2+ | Trace | |
| β- (2.3×10−4%) | 215At | |||||||||
| 216Po | Thorium A | 84 | 132 | 216.0019150(24) | 0.145(2) s | α | 212Pb | 0+ | Trace | |
| β-β- (rare) | 216Rn | |||||||||
| 217Po | 84 | 133 | 217.006335(7) | 1.47(5) s | α (95%) | 213Pb | 5/2+# | |||
| β- (5%) | 217At | |||||||||
| 218Po | Radium A | 84 | 134 | 218.0089730(26) | 3.10(1) min | α (99.98%) | 214Pb | 0+ | Trace | |
| β- (.02%) | 218At | |||||||||
| 219Po | 84 | 135 | 219.01374(39)# | 2# min |
7/2+# | |||||
| 220Po | 84 | 136 | 220.01660(39)# | 40# s |
0+ | |||||
Read more about this topic: Isotopes Of Polonium
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