Naturally occurring isotopes
| Nominal mass | Accurate mass | % natural abundance | Nuclear spin | Nuclear magnetic moment | Enrichment available % |
|---|---|---|---|---|---|
| 45Sc | 44.95591000 (14) | 100 | 7/2- | 4.756483 | N/A |
Radioactive isotopes
| Nominal mass | Accurate mass | Half-life | Decay mode and energy | Nuclear spin | Nuclear magnetic moment |
|---|---|---|---|---|---|
| 43Sc | 42.961150 | 3.89 h |  - (2.221); EC;  | 7/2- | +4.62 |
| 44Sc | 43.959404 | 3.93 h | - (3.655); EC; | 2+ | +2.56 |
| 44mSc | 2.44d | IT (0.27); EC (3.926); |
6+ | +3.88 | |
| 46Sc | 45.955170 | 83.81 d | - (2.367); | 4+ | +3.03 |
| 47Sc | 46.952408 | 3.349 d | - (0.601); | 7/2- | +5.34 |
| 48Sc | 47.952235 | 43.7 h | - (3.99); | 6+ |
