| Proton | Neutron | Nuclear Spin | Energy State | |
|---|---|---|---|---|
| 128Sm | 62 | 66 | 0 | |
| 129Sm | 62 | 67 | 5/2 | |
| 130Sm | 62 | 68 | 0 | |
| 131Sm | 62 | 69 | 5/2 | |
| 132Sm | 62 | 70 | 0 | |
| 133Sm | 62 | 71 | 5/2 | |
| 134Sm | 62 | 72 | 0 | |
| 135Sm | 62 | 73 | 7/2 | |
| 136mSm | 62 | 74 | -8 | |
| 136Sm | 62 | 74 | 0 | |
| 137Sm | 62 | 75 | -9/2 | |
| 137mSm | 62 | 75 | 1/2 | |
| 138Sm | 62 | 76 | 0 | |
| 139mSm | 62 | 77 | -11/2 | |
| 139Sm | 62 | 77 | 1/2 | |
| 140Sm | 62 | 78 | 0 | |
| 141Sm | 62 | 79 | 1/2 | |
| 141mSm | 62 | 79 | -11/2 | |
| 142Sm | 62 | 80 | 0 | |
| 143Sm | 62 | 81 | 3/2 | |
| 143m1Sm | 62 | 81 | -11/2 | |
| 143m2Sm | 62 | 81 | -23/2 | |
| 144mSm | 62 | 82 | 6 | |
| 144Sm | 62 | 82 | 0 | Stable |
| 145mSm | 62 | 83 | 49/2 | |
| 145Sm | 62 | 83 | -7/2 | |
| 146Sm | 62 | 84 | 0 | |
| 147Sm | 62 | 85 | -7/2 | |
| 148Sm | 62 | 86 | 0 | |
| 149Sm | 62 | 87 | -7/2 | Stable |
| 150Sm | 62 | 88 | 0 | Stable |
| 151Sm | 62 | 89 | -5/2 | |
| 151mSm | 62 | 89 | -11/2 | |
| 152Sm | 62 | 90 | 0 | Stable |
| 153Sm | 62 | 91 | 3/2 | |
| 153mSm | 62 | 91 | -11/2 | |
| 154Sm | 62 | 92 | 0 | Stable |
| 155Sm | 62 | 93 | -3/2 | |
| 156mSm | 62 | 94 | -5 | |
| 156Sm | 62 | 94 | 0 | |
| 157Sm | 62 | 95 | -3/2 | |
| 158Sm | 62 | 96 | 0 | |
| 159Sm | 62 | 97 | -5/2 | |
| 160Sm | 62 | 98 | 0 | |
| 161Sm | 62 | 99 | 7/2 | |
| 162Sm | 62 | 100 | 0 | |
| 163Sm | 62 | 101 | -1/2 | |
| 164Sm | 62 | 102 | 0 | |
| 165Sm | 62 | 103 | -5/2 |