| Quantity | Value | Units | Value | Units |
| Atomic number | 65 | |||
| Atomic mass | 158.92535(2) | g mole-1 | ||
| Specific gravity | 8.230 | g cm-3 | ||
| Mean excitation energy | 614.0 | eV | ||
| Minimum ionization | 1.188 | MeV g-1cm2 | 9.778 | MeV cm-1 |
| Nuclear collision length | 106.1 | g cm-2 | 12.89 | cm |
| Nuclear interaction length | 183.0 | g cm-2 | 22.24 | cm |
| Pion collision length | 129.9 | g cm-2 | 15.78 | cm |
| Pion interaction length | 210.1 | g cm-2 | 25.53 | cm |
| Radiation length | 7.36 | g cm-2 | 0.8939 | cm |
| Critical energy | 9.17 | MeV (for e-) | 8.85 | MeV (for e+) |
| Molière radius | 17.00 | g cm-2 | 2.066 | cm |
| Plasma energy ℏωp | 52.87 | eV | ||
| Muon critical energy | 169. | GeV |