It's Elemental
Isotopes of the Element Beryllium
Beryllium
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 |
| 9 | 100.% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 5 | No Data Available | Proton Emission | No Data Available |
| 6 | 4.953×10-21 seconds | Proton Emission | 100.00% |
| Alpha Decay | 100.00% | ||
| 7 | 53.24 days | Electron Capture | 100.00% |
| 8 | 8.181×10-17 seconds | Alpha Decay | 100.00% |
| 9 | STABLE | - | - |
| 10 | 1.387×10+6 years | Beta-minus Decay | 100.00% |
| 11 | 13.81 seconds | Beta-minus Decay with delayed Alpha Decay | 3.1% |
| Beta-minus Decay | 100.00% | ||
| 12 | 21.49 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | <= 1.00% | ||
| 13 | 2.7×10-21 seconds | Neutron Emission | No Data Available |
| 14 | 4.35 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 81.00% | ||
| Beta-minus Decay with delayed Double Neutron Emission | 5.00% | ||
| 15 | 200 nanoseconds | Neutron Emission (suspected) | No Data Available |
| 16 | 200 nanoseconds | Double Neutron Emission (suspected) | No Data Available |
Citation and linking information
For questions about this page, please contact Carol McKisson.