| Quantity | Value | Units | Value | Units |
| Atomic number | 38 | |||
| Atomic mass | 87.62(1) | g mole-1 | ||
| Specific gravity | 2.540 | g cm-3 | ||
| Mean excitation energy | 366.0 | eV | ||
| Minimum ionization | 1.353 | MeV g-1cm2 | 3.437 | MeV cm-1 |
| Nuclear collision length | 91.0 | g cm-2 | 35.81 | cm |
| Nuclear interaction length | 151.5 | g cm-2 | 59.65 | cm |
| Pion collision length | 115.7 | g cm-2 | 45.55 | cm |
| Pion interaction length | 179.6 | g cm-2 | 70.72 | cm |
| Radiation length | 10.76 | g cm-2 | 4.237 | cm |
| Critical energy | 15.97 | MeV (for e-) | 15.47 | MeV (for e+) |
| Molière radius | 14.29 | g cm-2 | 5.626 | cm |
| Plasma energy ℏωp | 30.24 | eV | ||
| Muon critical energy | 265. | GeV |