| Atomic Mass | Mass Excess |
| 251.08896462276 amu | 82.87 MeV |
| Level energy (MeV) | Spin & parity | Half-life | Mode of decay | Branch ratio (%) | Decay energy (MeV) |
| Ground state | (7/2+) | 0.8 S 0.3 | A | <=100.0 | 0 8.890 |
| Ground state | (7/2+) | 0.8 S 0.3 | EC | 0 | |
| Ground state | (7/2+) | 0.8 S 0.3 | SF | <=8.00 | 0 |
There is no gamma-rays or the intensities are so weak!