It's Elemental
Isotopes of the Element Platinum
Platinum
Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information.
Isotopes With A Known Natural Abundance
| Mass Number | Natural Abundance | Half-life |
| 190 | 0.012% | 6.5×10+11 years |
| 192 | 0.782% | STABLE |
| 194 | 32.86% | STABLE |
| 195 | 33.78% | STABLE |
| 196 | 25.21% | STABLE |
| 198 | 7.36% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 166 | 300 microseconds | Alpha Decay | 100.00% |
| 167 | 0.9 milliseconds | Alpha Decay | 100.00% |
| 168 | 2.02 milliseconds | Alpha Decay | 100.00% |
| 169 | 7.0 milliseconds | Alpha Decay | 100.00% |
| 170 | 13.8 milliseconds | Alpha Decay | 98.00% |
| Electron Capture | No Data Available | ||
| 171 | 45.5 milliseconds | Alpha Decay | 90.00% |
| Electron Capture | 10.00% | ||
| 172 | 97.6 milliseconds | Alpha Decay | 94.00% |
| Electron Capture | 6.00% | ||
| 173 | 382 milliseconds | Alpha Decay | 100.00% |
| Electron Capture (suspected) | No Data Available | ||
| 174 | 0.889 seconds | Electron Capture | 24.00% |
| Alpha Decay | 76.00% | ||
| 175 | 2.53 seconds | Alpha Decay | 64.00% |
| Electron Capture | 36.00% | ||
| 176 | 6.33 seconds | Electron Capture | 60.00% |
| Alpha Decay | 40.00% | ||
| 177 | 10.6 seconds | Electron Capture | 94.30% |
| Alpha Decay | 5.70% | ||
| 178 | 20.7 seconds | Electron Capture | 92.30% |
| Alpha Decay | 7.70% | ||
| 179 | 21.2 seconds | Electron Capture | 99.76% |
| Alpha Decay | 0.24% | ||
| 180 | 56 seconds | Electron Capture | 100.00% |
| Alpha Decay | ~ 0.30% | ||
| 181 | 52.0 seconds | Electron Capture | 100.00% |
| Alpha Decay | ~ 0.08% | ||
| 182 | 2.67 minutes | Electron Capture | 99.96% |
| Alpha Decay | 0.04% | ||
| 183 | 6.5 minutes | Electron Capture | 100.00% |
| Alpha Decay | ~ 1.3×10-3 % | ||
| 183m | 43 seconds | Isomeric Transition | No Data Available |
| Electron Capture | 100.00% | ||
| Alpha Decay | < 4.0×10-4 % | ||
| 184 | 17.3 minutes | Electron Capture | 100.00% |
| Alpha Decay | ~ 1.0×10-3 % | ||
| 184m | 1.01 milliseconds | Isomeric Transition | 100.00% |
| 185 | 70.9 minutes | Electron Capture | < 100.00% |
| 185m | 33.0 minutes | Electron Capture | 99.00% |
| Isomeric Transition | < 2.00% | ||
| 186 | 2.08 hours | Electron Capture | 100.00% |
| Alpha Decay | ~ 1.4×10-4 % | ||
| 187 | 2.35 hours | Electron Capture | 100.00% |
| 188 | 10.2 days | Alpha Decay | 2.6×10-5 % |
| Electron Capture | 100.00% | ||
| 189 | 10.87 hours | Electron Capture | 100.00% |
| 190 | 6.5×10+11 years | Alpha Decay | 100.00% |
| 191 | 2.83 days | Electron Capture | 100.00% |
| 192 | STABLE | - | - |
| 193 | 50 years | Electron Capture | 100.00% |
| 193m | 4.33 days | Isomeric Transition | 100.00% |
| 194 | STABLE | - | - |
| 195 | STABLE | - | - |
| 195m | 4.010 days | Isomeric Transition | 100.00% |
| 196 | STABLE | - | - |
| 197 | 19.8915 hours | Beta-minus Decay | 100.00% |
| 197m | 95.41 minutes | Isomeric Transition | 96.70% |
| Beta-minus Decay | 3.30% | ||
| 198 | STABLE | - | - |
| 199 | 30.80 minutes | Beta-minus Decay | 100.00% |
| 199m | 13.6 seconds | Isomeric Transition | 100.00% |
| 200 | 12.6 hours | Beta-minus Decay | 100.00% |
| 201 | 2.5 minutes | Beta-minus Decay | 100.00% |
| 202 | 44 hours | Beta-minus Decay | 100.00% |
| 202m | 0.28 milliseconds | Isomeric Transition | 100.00% |
| 203 | 10 seconds | Beta-minus Decay | 100.00% |
| 204 | 10.3 seconds | Beta-minus Decay | 100.00% |
| 205 | > 300 nanoseconds | Beta-minus Decay | No Data Available |
Citation and linking information
For questions about this page, please contact Carol McKisson.