| Proton | Neutron | Nuclear Spin | Energy State | |
|---|---|---|---|---|
| 44Mn | 25 | 19 | -2 | |
| 45Mn | 25 | 20 | -7/2 | |
| 46mMn | 25 | 21 | -1 | |
| 46Mn | 25 | 21 | 4 | |
| 47Mn | 25 | 22 | -5/2 | |
| 48Mn | 25 | 23 | 4 | |
| 49Mn | 25 | 24 | -5/2 | |
| 50Mn | 25 | 25 | 0 | |
| 50mMn | 25 | 25 | 5 | |
| 51Mn | 25 | 26 | -5/2 | |
| 52mMn | 25 | 27 | 2 | |
| 52Mn | 25 | 27 | 6 | |
| 53Mn | 25 | 28 | -7/2 | |
| 54Mn | 25 | 29 | 3 | |
| 55Mn | 25 | 30 | -5/2 | Stable |
| 56Mn | 25 | 31 | 3 | |
| 57Mn | 25 | 32 | -5/2 | |
| 58Mn | 25 | 33 | 1 | |
| 58mMn | 25 | 33 | 4 | |
| 59Mn | 25 | 34 | -5/2 | |
| 60mMn | 25 | 35 | 3 | |
| 60Mn | 25 | 35 | 0 | |
| 61Mn | 25 | 36 | -5/2 | |
| 62Mn | 25 | 37 | 3 | |
| 62mMn | 25 | 37 | 1 | |
| 63Mn | 25 | 38 | -5/2 | |
| 64Mn | 25 | 39 | 1 | |
| 65Mn | 25 | 40 | -5/2 | |
| 67Mn | 25 | 42 | -5/2 | |
| 69Mn | 25 | 44 | -5/2 |