| Quantity | Value | Units | Value | Units |
| Atomic number | 31 | |||
| Atomic mass | 69.723(1) | g mole-1 | ||
| Density | 5.90 | g cm-3 | ||
| Mean excitation energy | 334.0 | eV | ||
| Minimum ionization | 1.379 | MeV g-1cm2 | 8.140 | MeV cm-1 |
| Nuclear collision length | 86.0 | g cm-2 | 14.57 | cm |
| Nuclear interaction length | 141.2 | g cm-2 | 23.92 | cm |
| Pion collision length | 111.1 | g cm-2 | 18.82 | cm |
| Pion interaction length | 169.7 | g cm-2 | 28.74 | cm |
| Radiation length | 12.47 | g cm-2 | 2.113 | cm |
| Critical energy | 18.57 | MeV (for e-) | 17.98 | MeV (for e+) |
| Molière radius | 14.24 | g cm-2 | 2.412 | cm |
| Plasma energy |
46.69 | eV | ||
| Muon critical energy | 304. | GeV |