It's Elemental
Isotopes of the Element Sodium
Sodium
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 |
| 23 | 100% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 18 | 1.3×10-21 seconds | Proton Emission | 100.00% |
| 19 | < 40 nanoseconds | Proton Emission | No Data Available |
| 20 | 447.9 milliseconds | Electron Capture with delayed Alpha Decay | 20.05% |
| Electron Capture | 100.00% | ||
| 21 | 22.49 seconds | Electron Capture | 100.00% |
| 22 | 2.6027 years | Electron Capture | 100.00% |
| 23 | STABLE | - | - |
| 24 | 14.997 hours | Beta-minus Decay | 100.00% |
| 24m | 20.18 milliseconds | Isomeric Transition | 99.95% |
| Beta-minus Decay | ~ 0.05% | ||
| 25 | 59.1 seconds | Beta-minus Decay | 100.00% |
| 26 | 1.07128 seconds | Beta-minus Decay | 100.00% |
| 27 | 301 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.13% | ||
| 28 | 30.5 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 0.58% | ||
| 29 | 44.9 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 21.50% | ||
| 30 | 48 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 30.00% | ||
| Beta-minus Decay with delayed Double Neutron Emission | 1.15% | ||
| Beta-minus Decay with delayed Alpha Decay | 5.5×10-5 % | ||
| 31 | 17.0 milliseconds | Beta-minus Decay with delayed Double Neutron Emission | 0.87% |
| Beta-minus Decay with delayed Triple Neutron Emission | < 0.05% | ||
| Beta-minus Decay | 100.00% | ||
| Beta-minus Decay with delayed Neutron Emission | 37.00% | ||
| 32 | 13.2 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 24.00% | ||
| Beta-minus Decay with delayed Double Neutron Emission | 8.00% | ||
| 33 | 8.0 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 47.00% | ||
| Beta-minus Decay with delayed Double Neutron Emission | 13.00% | ||
| 34 | 5.5 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Double Neutron Emission | ~ 50.00% | ||
| Beta-minus Decay with delayed Neutron Emission | ~ 15.00% | ||
| 35 | 1.5 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 36 | < 180 nanoseconds | Neutron Emission | No Data Available |
| 37 | > 60 nanoseconds | Beta-minus Decay with delayed Neutron Emission | No Data Available |
| Beta-minus Decay | No Data Available |
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