| Quantity | Value | Units | Value | Units |
| Atomic number | 73 | |||
| Atomic mass | 180.94788(2) | g mol-1 | ||
| Density | 16.65 | g cm-3 | ||
| Mean excitation energy | 718.0 | eV | ||
| Minimum ionization | 1.149 | MeV g-1cm2 | 19.14 | MeV cm-1 |
| Nuclear interaction length | 191.0 | g cm-2 | 11.47 | cm |
| Nuclear collision length | 109.9 | g cm-2 | 6.599 | cm |
| Pion interaction length | 217.5 | g cm-2 | 13.06 | cm |
| Pion collision length | 133.4 | g cm-2 | 8.011 | cm |
| Radiation length | 6.82 | g cm-2 | 0.4094 | cm |
| Critical energy | 8.09 | MeV (for e-) | 7.79 | MeV (for e+) |
| Muon critical energy | 152. | GeV | ||
| Molière radius | 17.88 | g cm-2 | 1.073 | cm |
| Plasma energy ℏωp | 74.69 | eV |