Most of the isotope data on this site has been obtained from the National Nuclear Data Center.
Naturally Occurring Isotopes
| Mass Number | Natural Abundance | Half-life |
| 93 | 100% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 81 | < 200 nanoseconds | Electron Capture | No Data Available |
| 82 | 50 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | No Data Available | ||
| 83 | 3.8 seconds | Electron Capture | 100.00% |
| 84 | 9.8 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | No Data Available | ||
| 85 | 20.5 seconds | Electron Capture | 100.00% |
| 85m | 12 seconds | Electron Capture | No Data Available |
| Isomeric Transition | No Data Available | ||
| 85m1 | 3.3 seconds | Isomeric Transition | No Data Available |
| Electron Capture | No Data Available | ||
| 86 | 88 seconds | Electron Capture | 100.00% |
| 87 | 3.75 minutes | Electron Capture | 100.00% |
| 87m | 2.6 minutes | Electron Capture | No Data Available |
| 88 | 14.55 minutes | Electron Capture | 100.00% |
| 88m | 7.78 minutes | Electron Capture | 100.00% |
| 89 | 2.03 hours | Electron Capture | 100.00% |
| 89m | 66 minutes | Electron Capture | 100.00% |
| 90 | 14.60 hours | Electron Capture | 100.00% |
| 90m | 18.81 seconds | Isomeric Transition | 100.00% |
| 91 | 6.8×10+2 years | Electron Capture | 100.00% |
| 91m | 60.86 days | Isomeric Transition | 96.60% |
| Electron Capture | 3.40% | ||
| 92 | 3.47×10+7 years | Electron Capture | 100.00% |
| Beta-minus Decay | < 0.05% | ||
| 92m | 10.15 days | Electron Capture | 100.00% |
| 93 | STABLE | - | - |
| 93m | 16.12 years | Isomeric Transition | 100.00% |
| 94 | 2.03×10+4 years | Beta-minus Decay | 100.00% |
| 94m | 6.263 minutes | Isomeric Transition | 99.50% |
| Beta-minus Decay | 0.50% | ||
| 95 | 34.991 days | Beta-minus Decay | 100.00% |
| 95m | 3.61 days | Isomeric Transition | 94.40% |
| Beta-minus Decay | 5.60% | ||
| 96 | 23.35 hours | Beta-minus Decay | 100.00% |
| 97 | 72.1 minutes | Beta-minus Decay | 100.00% |
| 97m | 58.7 seconds | Isomeric Transition | 100.00% |
| 98 | 2.86 seconds | Beta-minus Decay | 100.00% |
| 98m | 51.3 minutes | Beta-minus Decay | 99.90% |
| Isomeric Transition | < 0.20% | ||
| 99 | 15.0 seconds | Beta-minus Decay | 100.00% |
| 99m | 2.5 minutes | Isomeric Transition | < 3.80% |
| Beta-minus Decay | > 96.20% | ||
| 100 | 1.5 seconds | Beta-minus Decay | 100.00% |
| 100m | 2.99 seconds | Beta-minus Decay | 100.00% |
| 101 | 7.1 seconds | Beta-minus Decay | 100.00% |
| 102 | 4.3 seconds | Beta-minus Decay | 100.00% |
| 102m | 1.3 seconds | Beta-minus Decay | 100.00% |
| 103 | 1.5 seconds | Beta-minus Decay | 100.00% |
| 104 | 4.9 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.06% | ||
| 104m | 0.94 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.05% | ||
| 105 | 2.95 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 1.70% | ||
| 106 | 0.93 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 4.50% | ||
| 107 | 300 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 8.00% | ||
| 108 | 220 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 8.00% | ||
| 109 | 106 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | < 15.00% | ||
| 110 | 86 milliseconds | Beta-minus Decay with delayed Neutron Emission | 40.00% |
| Beta-minus Decay | 100.00% | ||
| 111 | 51 milliseconds | Beta-minus Decay | No Data Available |
| 112 | 33 milliseconds | Beta-minus Decay | No Data Available |
| 113 | > 300 nanoseconds | Beta-minus Decay | No Data Available |
| 114 | > 392 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| Beta-minus Decay with delayed Double Neutron Emission | No Data Available | ||
| 115 | > 394 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| Beta-minus Decay with delayed Double Neutron Emission | No Data Available |
This page is maintained by Steve Gagnon.