| Atomic Mass | Mass Excess |
| 134.906970938218 amu | -86.656 MeV |
| Level energy (MeV) | Spin & parity | Half-life | Mode of decay | Branch ratio (%) | Decay energy (MeV) |
| Ground state | 5/2+ | 19.5 H 0.2 | EC | 100 | 1.2 |
| Decay mode | Half-life | Gamma-ray energy (keV) | Intensity (%) |
| EC | 19.5 H 0.2 | 480.510 | 1.52+- 0.24 |