| Proton | Neutron | Nuclear Spin | Energy State | |
|---|---|---|---|---|
| 212Tl | 81 | 131 | 5 | |
| 213Pb | 82 | 131 | 9/2 | |
| 214Bi | 83 | 131 | -1 | |
| 215Po | 84 | 131 | 9/2 | |
| 216mAt | 85 | 131 | -9 | |
| 216At | 85 | 131 | -1 | |
| 217Rn | 86 | 131 | 9/2 | |
| 218Fr | 87 | 131 | -1 | |
| 219Ra | 88 | 131 | 7/2 | |
| 220Ac | 89 | 131 | -3 | |
| 221Th | 90 | 131 | 7/2 | |
| 222Pa | 91 | 131 | -4 | |
| 223U | 92 | 131 | 7/2 |