| Quantity | Value | Units | Value | Units |
| Atomic number | 22 | |||
| Atomic mass | 47.867(1) | g mol-1 | ||
| Density | 4.540 | g cm-3 | ||
| Mean excitation energy | 233.0 | eV | ||
| Minimum ionization | 1.477 | MeV g-1cm2 | 6.705 | MeV cm-1 |
| Nuclear interaction length | 126.2 | g cm-2 | 27.80 | cm |
| Nuclear collision length | 78.8 | g cm-2 | 17.37 | cm |
| Pion interaction length | 155.0 | g cm-2 | 34.15 | cm |
| Pion collision length | 104.3 | g cm-2 | 22.97 | cm |
| Radiation length | 16.16 | g cm-2 | 3.560 | cm |
| Critical energy | 26.01 | MeV (for e-) | 25.23 | MeV (for e+) |
| Muon critical energy | 402. | GeV | ||
| Molière radius | 13.18 | g cm-2 | 2.902 | cm |
| Plasma energy ℏωp | 41.63 | eV | ||
| Melting point | 1941. | K | 1668. | C |
| Boiling point @ 1 atm | 3560. | K | 3287. | C |