Most of the isotope data on this site has been obtained from the National Nuclear Data Center.
Naturally Occurring Isotopes
Flerovium has no naturally occurring isotopes.
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 285 | No Data Available | Alpha Decay | No Data Available |
| 286 | 0.16 seconds | Spontaneous Fission | ~ 60.00% |
| Alpha Decay | ~ 40.00% | ||
| 287 | 0.51 seconds | Alpha Decay | 100.00% |
| 288 | 0.52 seconds | Alpha Decay | 100.00% |
| 289 | 0.97 seconds | Alpha Decay | 100.00% |
| 289m | 2.7 seconds | Alpha Decay | 100.00% |
This page is maintained by Steve Gagnon.