[Click for Main Data] Proton Emission Neutron Emission Electron Emission Positron Emission
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 |
| 133 | 100% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 112 | 0.5 milliseconds | Proton Emission | 100.00% |
| 113 | 16.7 microseconds | Proton Emission | 100.00% |
| Alpha Decay | No Data Available | ||
| 114 | 0.57 seconds | Electron Capture | 99.98% |
| Electron Capture with delayed Proton Emission | 8.70% | ||
| Electron Capture with delayed Alpha Decay | 0.19% | ||
| Alpha Decay | 0.02% | ||
| 115 | 1.4 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | ~ 0.07% | ||
| 116 | 0.70 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 2.80% | ||
| Electron Capture with delayed Alpha Decay | 0.05% | ||
| 116m | 3.85 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 0.51% | ||
| Electron Capture with delayed Alpha Decay | 8.0×10-3 % | ||
| 117 | 8.4 seconds | Electron Capture | 100.00% |
| 117m | 6.5 seconds | Electron Capture | No Data Available |
| 118 | 14 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | < 0.04% | ||
| Electron Capture with delayed Alpha Decay | < 2.4×10-3 % | ||
| 118m | 17 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | < 0.04% | ||
| Electron Capture with delayed Alpha Decay | < 2.4×10-3 % | ||
| 119 | 43.0 seconds | Electron Capture | 100.00% |
| 119m | 30.4 seconds | Electron Capture | 100.00% |
| 120 | 61.3 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Alpha Decay | 2.0×10-5 % | ||
| Electron Capture with delayed Proton Emission | 7.0×10-6 % | ||
| 120m | 57 seconds | Electron Capture | 100.00% |
| 121 | 155 seconds | Electron Capture | 100.00% |
| 121m | 122 seconds | Isomeric Transition | 17.00% |
| Electron Capture | 83.00% | ||
| 122 | 21.18 seconds | Electron Capture | 100.00% |
| 122m | 0.36 seconds | Isomeric Transition | 100.00% |
| 122m1 | 3.70 minutes | Electron Capture | 100.00% |
| 123 | 5.88 minutes | Electron Capture | 100.00% |
| 123m | 1.64 seconds | Isomeric Transition | 100.00% |
| 124 | 30.9 seconds | Electron Capture | 100.00% |
| 124m | 6.3 seconds | Isomeric Transition | 100.00% |
| 125 | 46.7 minutes | Electron Capture | 100.00% |
| 125m | 0.90 milliseconds | Isomeric Transition | 100.00% |
| 126 | 1.64 minutes | Electron Capture | 100.00% |
| 127 | 6.25 hours | Electron Capture | 100.00% |
| 128 | 3.66 minutes | Electron Capture | 100.00% |
| 129 | 32.06 hours | Electron Capture | 100.00% |
| 130 | 29.21 minutes | Electron Capture | 98.40% |
| Beta-minus Decay | 1.60% | ||
| 130m | 3.46 minutes | Isomeric Transition | 99.84% |
| Electron Capture | 0.16% | ||
| 131 | 9.689 days | Electron Capture | 100.00% |
| 132 | 6.480 days | Electron Capture | 98.13% |
| Beta-minus Decay | 1.87% | ||
| 133 | STABLE | - | - |
| 134 | 2.0652 years | Beta-minus Decay | 100.00% |
| Electron Capture | 3.0×10-4 % | ||
| 134m | 2.912 hours | Isomeric Transition | 100.00% |
| 135 | 2.3×10+6 years | Beta-minus Decay | 100.00% |
| 135m | 53 minutes | Isomeric Transition | 100.00% |
| 136 | 13.04 days | Beta-minus Decay | 100.00% |
| 136m | 17.5 seconds | Beta-minus Decay | No Data Available |
| Isomeric Transition | > 0.00% | ||
| 137 | 30.08 years | Beta-minus Decay | 100.00% |
| 138 | 33.41 minutes | Beta-minus Decay | 100.00% |
| 138m | 2.91 minutes | Isomeric Transition | 81.00% |
| Beta-minus Decay | 19.00% | ||
| 139 | 9.27 minutes | Beta-minus Decay | 100.00% |
| 140 | 63.7 seconds | Beta-minus Decay | 100.00% |
| 141 | 24.84 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.04% | ||
| 142 | 1.684 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.09% | ||
| 143 | 1.791 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 1.64% | ||
| 144 | 0.994 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 3.03% | ||
| 144m | < 1 seconds | Beta-minus Decay | No Data Available |
| 145 | 0.587 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 14.70% | ||
| 146 | 0.321 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 14.20% | ||
| 147 | 0.230 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 28.50% | ||
| 148 | 146 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 25.10% | ||
| 149 | > 50 milliseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 150 | > 50 milliseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 151 | > 50 milliseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available |
This page is maintained by Steve Gagnon.