| Quantity | Value | Units | Value | Units |
| Atomic number | 45 | |||
| Atomic mass | 102.90550(2) | g mole-1 | ||
| Specific gravity | 12.41 | g cm-3 | ||
| Mean excitation energy | 449.0 | eV | ||
| Minimum ionization | 1.310 | MeV g-1cm2 | 16.26 | MeV cm-1 |
| Nuclear collision length | 94.7 | g cm-2 | 7.631 | cm |
| Nuclear interaction length | 159.3 | g cm-2 | 12.84 | cm |
| Pion collision length | 119.2 | g cm-2 | 9.607 | cm |
| Pion interaction length | 187.1 | g cm-2 | 15.08 | cm |
| Radiation length | 9.27 | g cm-2 | 0.7466 | cm |
| Critical energy | 12.84 | MeV (for e-) | 12.41 | MeV (for e+) |
| Molière radius | 15.30 | g cm-2 | 1.233 | cm |
| Plasma energy ℏωp | 67.13 | eV | ||
| Muon critical energy | 221. | GeV |