| Atomic Mass | Mass Excess |
| 155.93901194378 amu | -56.81 MeV |
| Level energy (MeV) | Spin & parity | Half-life | Mode of decay | Branch ratio (%) | Decay energy (MeV) |
| Ground state | 2- | 83.8 S 1.8 | EC | 99.94 | 7.44 |
| Ground state | 2- | 83.8 S 1.8 | A | .06 | 4.34 |
| Ground state | 19 S 3 | A | 4.34 |
There is no gamma-rays or the intensities are so weak!