| Quantity | Value | Units | Value | Units |
| Atomic number | 83 | |||
| Atomic mass | 208.98040(1) | g mole-1 | ||
| Specific gravity | 9.747 | g cm-3 | ||
| Mean excitation energy | 823.0 | eV | ||
| Minimum ionization | 1.128 | MeV g-1cm2 | 10.99 | MeV cm-1 |
| Nuclear collision length | 114.3 | g cm-2 | 11.73 | cm |
| Nuclear interaction length | 200.2 | g cm-2 | 20.54 | cm |
| Pion collision length | 137.6 | g cm-2 | 14.11 | cm |
| Pion interaction length | 226.7 | g cm-2 | 23.26 | cm |
| Radiation length | 6.29 | g cm-2 | 0.6454 | cm |
| Critical energy | 7.39 | MeV (for e-) | 7.13 | MeV (for e+) |
| Molière radius | 18.04 | g cm-2 | 1.851 | cm |
| Plasma energy ℏωp | 56.70 | eV | ||
| Muon critical energy | 141. | GeV |