It's Elemental
Isotopes of the Element Hydrogen
Hydrogen
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 |
| 1 | 99.9885% | STABLE |
| 2 | 0.0115% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 1 | STABLE | - | - |
| 2 | STABLE | - | - |
| 3 | 12.32 years | Beta-minus Decay | 100.00% |
| 4 | No Data Available | Neutron Emission | 100.00% |
| 5 | 7.995×10-23 seconds | Double Neutron Emission | 100.00% |
| 6 | 2.848×10-22 seconds | Neutron Emission | 100.00% |
| 7 | 9.152×10-15 seconds | Double Neutron Emission (suspected) | No Data Available |
Citation and linking information
For questions about this page, please contact Carol McKisson.