It's Elemental
Isotopes of the Element Yttrium
Yttrium
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 |
| 89 | 100% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 76 | > 200 nanoseconds | Proton Emission | No Data Available |
| Electron Capture | No Data Available | ||
| 77 | 57 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | No Data Available | ||
| Proton Emission | No Data Available | ||
| 78 | 53 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | No Data Available | ||
| 78m | 5.8 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | No Data Available | ||
| 79 | 14.8 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | No Data Available | ||
| 80 | 30.1 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | No Data Available | ||
| 80m | 4.8 seconds | Isomeric Transition | 81.00% |
| Electron Capture | 19.00% | ||
| 81 | 70.4 seconds | Electron Capture | 100.00% |
| 82 | 8.30 seconds | Electron Capture | 100.00% |
| 83 | 7.08 minutes | Electron Capture | 100.00% |
| 83m | 2.85 minutes | Electron Capture | 60.00% |
| Isomeric Transition | 40.00% | ||
| 84 | 39.5 minutes | Electron Capture | 100.00% |
| 84m | 4.6 seconds | Electron Capture | 100.00% |
| 85 | 2.68 hours | Electron Capture | 100.00% |
| 85m | 4.86 hours | Electron Capture | 100.00% |
| Isomeric Transition | < 2.0×10-3 % | ||
| 86 | 14.74 hours | Electron Capture | 100.00% |
| 86m | 48 minutes | Isomeric Transition | 99.31% |
| Electron Capture | 0.69% | ||
| 87 | 79.8 hours | Electron Capture | 100.00% |
| 87m | 13.37 hours | Isomeric Transition | 98.43% |
| Electron Capture | 1.57% | ||
| 88 | 106.626 days | Electron Capture | 100.00% |
| 89 | STABLE | - | - |
| 89m | 15.663 seconds | Isomeric Transition | 100.00% |
| 90 | 64.053 hours | Beta-minus Decay | 100.00% |
| 90m | 3.19 hours | Isomeric Transition | 100.00% |
| Beta-minus Decay | 1.8×10-3 % | ||
| 91 | 58.51 days | Beta-minus Decay | 100.00% |
| 91m | 49.71 minutes | Isomeric Transition | 100.00% |
| Beta-minus Decay | < 1.50% | ||
| 92 | 3.54 hours | Beta-minus Decay | 100.00% |
| 93 | 10.18 hours | Beta-minus Decay | 100.00% |
| 93m | 0.82 seconds | Isomeric Transition | 100.00% |
| 94 | 18.7 minutes | Beta-minus Decay | 100.00% |
| 95 | 10.3 minutes | Beta-minus Decay | 100.00% |
| 96 | 5.34 seconds | Beta-minus Decay | 100.00% |
| 96m | 9.6 seconds | Beta-minus Decay | 100.00% |
| 97 | 3.75 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.06% | ||
| 97m | 1.17 seconds | Beta-minus Decay | > 99.30% |
| Isomeric Transition | < 0.70% | ||
| Beta-minus Decay with delayed Neutron Emission | < 0.08% | ||
| 97m1 | 142 milliseconds | Isomeric Transition | 98.40% |
| Beta-minus Decay | 1.60% | ||
| 98 | 0.548 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.33% | ||
| 98m | 2.0 seconds | Beta-minus Decay | > 80.00% |
| Isomeric Transition | < 20.00% | ||
| Beta-minus Decay with delayed Neutron Emission | 3.40% | ||
| 99 | 1.484 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 1.70% | ||
| 100 | 735 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.92% | ||
| 100m | 0.94 seconds | Beta-minus Decay | 100.00% |
| 101 | 0.45 seconds | Beta-minus Decay with delayed Neutron Emission | 1.94% |
| Beta-minus Decay | 100.00% | ||
| 102 | 0.36 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 4.90% | ||
| 102m | 0.298 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 4.90% | ||
| 103 | 0.23 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 8.00% | ||
| 104 | 197 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 105 | 85 milliseconds | Beta-minus Decay with delayed Neutron Emission | < 82.00% |
| Beta-minus Decay | No Data Available | ||
| 106 | 62 milliseconds | Beta-minus Decay | No Data Available |
| 107 | 41 milliseconds | Beta-minus Decay | 100.00% |
| 108 | 25 milliseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 109 | > 393 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 |
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