| Quantity | Value | Units | Value | Units |
| Atomic number | 23 | |||
| Atomic mass | 50.9415(1) | g mole-1 | ||
| Specific gravity | 6.110 | g cm-3 | ||
| Mean excitation energy | 245.0 | eV | ||
| Minimum ionization | 1.436 | MeV g-1cm2 | 8.776 | MeV cm-1 |
| Nuclear collision length | 80.0 | g cm-2 | 13.09 | cm |
| Nuclear interaction length | 128.5 | g cm-2 | 21.04 | cm |
| Pion collision length | 105.3 | g cm-2 | 17.24 | cm |
| Pion interaction length | 157.5 | g cm-2 | 25.77 | cm |
| Radiation length | 15.84 | g cm-2 | 2.593 | cm |
| Critical energy | 24.67 | MeV (for e-) | 23.91 | MeV (for e+) |
| Molière radius | 13.62 | g cm-2 | 2.229 | cm |
| Plasma energy ℏωp | 47.86 | eV | ||
| Muon critical energy | 385. | GeV |