| Quantity | Value | Units | Value | Units |
| Atomic number | 39 | |||
| Atomic mass | 88.90584(2) | g mole-1 | ||
| Specific gravity | 4.469 | g cm-3 | ||
| Mean excitation energy | 379.0 | eV | ||
| Minimum ionization | 1.359 | MeV g-1cm2 | 6.075 | MeV cm-1 |
| Nuclear collision length | 91.3 | g cm-2 | 20.43 | cm |
| Nuclear interaction length | 152.2 | g cm-2 | 34.05 | cm |
| Pion collision length | 116.0 | g cm-2 | 25.96 | cm |
| Pion interaction length | 180.3 | g cm-2 | 40.34 | cm |
| Radiation length | 10.41 | g cm-2 | 2.329 | cm |
| Critical energy | 15.30 | MeV (for e-) | 14.81 | MeV (for e+) |
| Molière radius | 14.43 | g cm-2 | 3.228 | cm |
| Plasma energy ℏωp | 40.35 | eV | ||
| Muon critical energy | 256. | GeV |