It's Elemental
Isotopes of the Element Barium
Barium
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 |
| 130 | 0.106% | STABLE |
| 132 | 0.101% | > 3.0×10+21 years |
| 134 | 2.417% | STABLE |
| 135 | 6.592% | STABLE |
| 136 | 7.854% | STABLE |
| 137 | 11.232% | STABLE |
| 138 | 71.698% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 112 | No Data Available | No Data Available | No Data Available |
| 113 | No Data Available | No Data Available | No Data Available |
| 114 | 0.43 seconds | Emission of a carbon-12 nucleus | < 0.0034% |
| Electron Capture | 99.10% | ||
| Electron Capture with delayed Proton Emission | 20.00% | ||
| Alpha Decay | 0.90% | ||
| 115 | 0.45 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | > 15.00% | ||
| 116 | 1.3 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 3.00% | ||
| 117 | 1.75 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Alpha Decay | > 0.00% | ||
| Electron Capture with delayed Proton Emission | > 0.00% | ||
| 118 | 5.5 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | No Data Available | ||
| 119 | 5.4 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | < 25.00% | ||
| 120 | 24 seconds | Electron Capture | 100.00% |
| 121 | 29.7 seconds | Electron Capture | 100.00% |
| 122 | 1.95 minutes | Electron Capture | 100.00% |
| 123 | 2.7 minutes | Electron Capture | 100.00% |
| 124 | 11.0 minutes | Electron Capture | 100.00% |
| 125 | 3.3 minutes | Electron Capture | 100.00% |
| 126 | 100 minutes | Electron Capture | 100.00% |
| 127 | 12.7 minutes | Electron Capture | 100.00% |
| 127m | 1.9 seconds | Isomeric Transition | 100.00% |
| 128 | 2.43 days | Electron Capture | 100.00% |
| 129 | 2.23 hours | Electron Capture | 100.00% |
| 129m | 2.16 hours | Electron Capture | <= 100.00% |
| Isomeric Transition | No Data Available | ||
| 130 | STABLE | - | - |
| 130m | 9.4 milliseconds | Isomeric Transition | 100.00% |
| 131 | 11.50 days | Electron Capture | 100.00% |
| 131m | 14.6 minutes | Isomeric Transition | 100.00% |
| 132 | > 3.0×10+21 years | Double Electron Capture | No Data Available |
| 133 | 10.551 years | Electron Capture | 100.00% |
| 133m | 38.93 hours | Electron Capture | 0.01% |
| Isomeric Transition | 99.99% | ||
| 134 | STABLE | - | - |
| 135 | STABLE | - | - |
| 135m | 28.7 hours | Isomeric Transition | 100.00% |
| 136 | STABLE | - | - |
| 136m | 0.3084 seconds | Isomeric Transition | 100.00% |
| 137 | STABLE | - | - |
| 137m | 2.552 minutes | Isomeric Transition | 100.00% |
| 138 | STABLE | - | - |
| 139 | 83.06 minutes | Beta-minus Decay | 100.00% |
| 140 | 12.7527 days | Beta-minus Decay | 100.00% |
| 141 | 18.27 minutes | Beta-minus Decay | 100.00% |
| 142 | 10.6 minutes | Beta-minus Decay | 100.00% |
| 143 | 14.5 seconds | Beta-minus Decay | 100.00% |
| 144 | 11.5 seconds | Beta-minus Decay | 100.00% |
| 145 | 4.31 seconds | Beta-minus Decay | 100.00% |
| 146 | 2.22 seconds | Beta-minus Decay | 100.00% |
| 147 | 0.894 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.06% | ||
| 148 | 0.612 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.40% | ||
| 149 | 0.344 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.43% | ||
| 150 | 0.3 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 151 | > 300 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 152 | > 406 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 153 | No Data Available | Beta-minus Decay (suspected) | No Data Available |
Citation and linking information
For questions about this page, please contact Carol McKisson.