| Quantity | Value | Units | Value | Units |
| Atomic number | 3 | |||
| Atomic mass | 6.94(2) | g mol-1 | ||
| Density | 0.5340 | g cm-3 | ||
| Mean excitation energy | 40.0 | eV | ||
| Minimum ionization | 1.639 | MeV g-1cm2 | 0.8750 | MeV cm-1 |
| Nuclear interaction length | 71.3 | g cm-2 | 133.6 | cm |
| Nuclear collision length | 52.2 | g cm-2 | 97.69 | cm |
| Pion interaction length | 103.0 | g cm-2 | 192.9 | cm |
| Pion collision length | 79.1 | g cm-2 | 148.2 | cm |
| Radiation length | 82.77 | g cm-2 | 155.0 | cm |
| Critical energy | 149.04 | MeV (for e-) | 145.31 | MeV (for e+) |
| Muon critical energy | 1578. | GeV | ||
| Molière radius | 11.78 | g cm-2 | 22.05 | cm |
| Plasma energy ℏωp | 13.84 | eV | ||
| Melting point | 453.6 | K | 180.5 | C |
| Boiling point @ 1 atm | 1615. | K | 1342. | C |