It's Elemental
Isotopes of the Element Hassium
Hassium
Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information.
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 263 | 0.74 milliseconds | Alpha Decay | <= 100.00% |
| Spontaneous Fission | < 8.40% | ||
| 264 | ≈ 0.8 milliseconds | Alpha Decay | ~ 50.00% |
| Spontaneous Fission | ~ 50.00% | ||
| 265 | 1.9 milliseconds | Alpha Decay | < 100.00% |
| Spontaneous Fission | <= 1.00% | ||
| 265m | 0.3 milliseconds | Alpha Decay | < 100.00% |
| 266 | 2.3 milliseconds | Alpha Decay | 100.00% |
| Spontaneous Fission | < 1.40% | ||
| 267 | 52 milliseconds | Alpha Decay | >= 80.00% |
| Spontaneous Fission | < 20.00% | ||
| 267m | 0.8 seconds | Alpha Decay | 100.00% |
| 268 | 0.4 seconds | Alpha Decay | No Data Available |
| 269 | 3.6 seconds | Alpha Decay | 100.00% |
| 269m | 9.7 seconds | Alpha Decay | 100.00% |
| 270 | 22 seconds | Alpha Decay | 100.00% |
| 271 | No Data Available | Alpha Decay (suspected) | No Data Available |
| Spontaneous Fission (suspected) | No Data Available | ||
| 272 | No Data Available | Spontaneous Fission (suspected) | No Data Available |
| Alpha Decay (suspected) | No Data Available | ||
| 273 | No Data Available | Alpha Decay | No Data Available |
| 274 | No Data Available | Spontaneous Fission (suspected) | No Data Available |
| Alpha Decay (suspected) | No Data Available | ||
| 275 | 0.15 seconds | Alpha Decay | 100.00% |
| 276 | No Data Available | Spontaneous Fission (suspected) | No Data Available |
| Alpha Decay (suspected) | No Data Available | ||
| 277 | No Data Available | No Data Available | No Data Available |
Citation and linking information
For questions about this page, please contact Carol McKisson.