Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information.
All Known Isotopes of the Element Copernicium
| Mass Number | | Half-life | | Decay Mode | | Branching Percentage | | | 277 | | 0.24 milliseconds | | Alpha Decay | | 100.00 | | | 281 | | 0.9 milliseconds | | Alpha Decay | | 100.00 | | | | | | Spontaneous Fission | | No Data Available | | | 282 | | 0.82 milliseconds | | Spontaneous Fission | | 100.00 | | | 283 | | 3.8 seconds | | Alpha Decay | | 100.00 | | | | | | Spontaneous Fission | | <=10 | | | 285 | | 10 minutes | | Alpha Decay | | 100.00 | |
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