| Quantity | Value | Units | Value | Units |
| Atomic number | 6 | |||
| Atomic mass | 12.0107(8) | g mole-1 | ||
| Specific gravity | 3.520 | g cm-3 | ||
| Mean excitation energy | 78.0 | eV | ||
| Minimum ionization | 1.725 | MeV g-1cm2 | 6.071 | MeV cm-1 |
| Nuclear collision length | 59.2 | g cm-2 | 16.82 | cm |
| Nuclear interaction length | 85.8 | g cm-2 | 24.38 | cm |
| Pion collision length | 86.5 | g cm-2 | 24.56 | cm |
| Pion interaction length | 117.8 | g cm-2 | 33.46 | cm |
| Radiation length | 42.70 | g cm-2 | 12.13 | cm |
| Critical energy | 80.17 | MeV (for e-) | 77.94 | MeV (for e+) |
| Molière radius | 11.29 | g cm-2 | 3.208 | cm |
| Plasma energy ℏωp | 38.21 | eV | ||
| Muon critical energy | 1044. | GeV | ||
| Index of refraction (Na D) | 2.419 |