| Atomic Mass | Mass Excess |
| 140.9109570085 amu | -82.943 MeV |
| Level energy (MeV) | Spin & parity | Half-life | Mode of decay | Branch ratio (%) | Decay energy (MeV) |
| Ground state | (7/2+) | 3.92 H 0.03 | B- | 100 | 2.502 |
| Decay mode | Half-life | Gamma-ray energy (keV) | Intensity (%) |
| B- | 3.92 H 0.03 | 1354.52 | 1.64+- 0.15 |