Table
| nuclide symbol |
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 | |||||||||
| 166Pt | 78 | 88 | 165.99486(54)# | 300(100) µs | 0+ | ||||
| 167Pt | 78 | 89 | 166.99298(44)# | 700(200) µs | 7/2-# | ||||
| 168Pt | 78 | 90 | 167.98815(22) | 2.00(18) ms | α | 164Os | 0+ | ||
| β+ (rare) | 168Ir | ||||||||
| 169Pt | 78 | 91 | 168.98672(22)# | 3.7(15) ms | α | 165Os | 3/2-# | ||
| β+ (rare) | 169Ir | ||||||||
| 170Pt | 78 | 92 | 169.982495(20) | 14.0(2) ms | α (98%) | 166Os | 0+ | ||
| β+ (2%) | 170Ir | ||||||||
| 171Pt | 78 | 93 | 170.98124(9) | 51(2) ms | α (99%) | 167Os | 3/2-# | ||
| β+ (1%) | 171Ir | ||||||||
| 172Pt | 78 | 94 | 171.977347(14) | 98.4(24) ms | α (77%) | 168Os | 0+ | ||
| β+ (23%) | 172Ir | ||||||||
| 173Pt | 78 | 95 | 172.97644(6) | 365(7) ms | α (84%) | 169Os | 5/2-# | ||
| β+ (16%) | 173Ir | ||||||||
| 174Pt | 78 | 96 | 173.972819(13) | 0.889(17) s | α (83%) | 170Os | 0+ | ||
| β+ (17%) | 174Ir | ||||||||
| 175Pt | 78 | 97 | 174.972421(20) | 2.53(6) s | α (64%) | 171Os | 5/2-# | ||
| β+ (36%) | 175Ir | ||||||||
| 176Pt | 78 | 98 | 175.968945(15) | 6.33(15) s | β+ (62%) | 176Ir | 0+ | ||
| α (38%) | 172Os | ||||||||
| 177Pt | 78 | 99 | 176.968469(16) | 10.6(4) s | β+ (94.4%) | 177Ir | 5/2- | ||
| α (5.6%) | 173Os | ||||||||
| 177mPt | 147.4(4) keV | 2.2(3) µs | 1/2- | ||||||
| 178Pt | 78 | 100 | 177.965649(12) | 21.1(6) s | β+ (92.3%) | 178Ir | 0+ | ||
| α (7.7%) | 174Os | ||||||||
| 179Pt | 78 | 101 | 178.965363(10) | 21.2(4) s | β+ (99.76%) | 179Ir | 1/2- | ||
| α (0.24%) | 175Os | ||||||||
| 180Pt | 78 | 102 | 179.963031(12) | 56(2) s | β+ (99.7%) | 180Ir | 0+ | ||
| α (0.3%) | 176Os | ||||||||
| 181Pt | 78 | 103 | 180.963097(16) | 52.0(22) s | β+ (99.93%) | 181Ir | 1/2- | ||
| α (0.074%) | 177Os | ||||||||
| 182Pt | 78 | 104 | 181.961171(17) | 2.2(1) min | β+ (99.96%) | 182Ir | 0+ | ||
| α (.038%) | 178Os | ||||||||
| 183Pt | 78 | 105 | 182.961597(17) | 6.5(10) min | β+ (99.99%) | 183Ir | 1/2- | ||
| α (.0096%) | 179Os | ||||||||
| 183m1Pt | 34.50(8) keV | 43(5) s | β+ (99.99%) | 183Ir | (7/2)- | ||||
| α (4×10−4%) | 179Os | ||||||||
| IT | 183Pt | ||||||||
| 183m2Pt | 195.68(11) keV | >150 ns | (9/2)+ | ||||||
| 184Pt | 78 | 106 | 183.959922(19) | 17.3(2) min | β+ (99.99%) | 184Ir | 0+ | ||
| α (.00169%) | 180Os | ||||||||
| 184mPt | 1839.4(16) keV | 1.01(5) ms | IT | 184Pt | 8- | ||||
| 185Pt | 78 | 107 | 184.96062(4) | 70.9(24) min | β+ (99.99%) | 185Ir | (9/2+) | ||
| α (.005%) | 181Os | ||||||||
| 185mPt | 103.4(2) keV | 33.0(8) min | β+ (98%) | 185Ir | (1/2-) | ||||
| α (2%) | 181Os | ||||||||
| 186Pt | 78 | 108 | 185.959351(23) | 2.08(5) h | β+ (99.99%) | 186Ir | 0+ | ||
| α (1.4×10−4%) | 182Os | ||||||||
| 187Pt | 78 | 109 | 186.96059(3) | 2.35(3) h | β+ | 187Ir | 3/2- | ||
| 188Pt | 78 | 110 | 187.959395(6) | 10.2(3) d | EC (99.99%) | 188Ir | 0+ | ||
| α (2.6×10−5%) | 184Os | ||||||||
| 189Pt | 78 | 111 | 188.960834(12) | 10.87(12) h | β+ | 189Ir | 3/2- | ||
| 189m1Pt | 172.80(6) keV | 464(25) ns | 9/2- | ||||||
| 189m2Pt | 191.6(4) keV | 143(5) µs | (13/2+) | ||||||
| 190Pt | 78 | 112 | 189.959932(6) | 6.5(3)×1011 a | α | 186Os | 0+ | 1.4(1)×10−4 | |
| 191Pt | 78 | 113 | 190.961677(5) | 2.862(7) d | EC | 191Ir | 3/2- | ||
| 191m1Pt | 100.67(2) keV | >1 µs | (9/2)- | ||||||
| 191m2Pt | 149.04(2) keV | 95(5) µs | (13/2)+ | ||||||
| 192Pt | 78 | 114 | 191.9610380(27) | Observationally Stable | 0+ | 0.00782(7) | |||
| 193Pt | 78 | 115 | 192.9629874(18) | 50(6) a | EC | 193Ir | 1/2- | ||
| 193mPt | 149.78(4) keV | 4.33(3) d | IT | 193Pt | 13/2+ | ||||
| 194Pt | 78 | 116 | 193.9626803(9) | Observationally Stable | 0+ | 0.32967(99) | |||
| 195Pt | 78 | 117 | 194.9647911(9) | Observationally Stable | 1/2- | 0.33832(10) | |||
| 195mPt | 259.30(8) keV | 4.010(5) d | IT | 195Pt | 13/2+ | ||||
| 196Pt | 78 | 118 | 195.9649515(9) | Observationally Stable | 0+ | 0.25242(41) | |||
| 197Pt | 78 | 119 | 196.9673402(9) | 19.8915(19) h | β- | 197Au | 1/2- | ||
| 197mPt | 399.59(20) keV | 95.41(18) min | IT (96.7%) | 197Pt | 13/2+ | ||||
| β- (3.3%) | 197Au | ||||||||
| 198Pt | 78 | 120 | 197.967893(3) | Observationally Stable | 0+ | 0.07163(55) | |||
| 199Pt | 78 | 121 | 198.970593(3) | 30.80(21) min | β- | 199Au | 5/2- | ||
| 199mPt | 424(2) keV | 13.6(4) s | IT | 199Pt | (13/2)+ | ||||
| 200Pt | 78 | 122 | 199.971441(22) | 12.5(3) h | β- | 200Au | 0+ | ||
| 201Pt | 78 | 123 | 200.97451(5) | 2.5(1) min | β- | 201Au | (5/2-) | ||
| 202Pt | 78 | 124 | 201.97574(32)# | 44(15) h | β- | 202Au | 0+ | ||
Read more about this topic: Isotopes Of Platinum
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