| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.53699 | |||
| Specific gravity | 1.023 | g cm-3 | ||
| Mean excitation energy | 66.2 | eV | ||
| Minimum ionization | 1.939 | MeV g-1cm2 | 1.984 | MeV cm-1 |
| Nuclear collision length | 57.8 | g cm-2 | 56.47 | cm |
| Nuclear interaction length | 82.3 | g cm-2 | 80.40 | cm |
| Pion collision length | 85.3 | g cm-2 | 83.31 | cm |
| Pion interaction length | 114.3 | g cm-2 | 111.7 | cm |
| Radiation length | 42.95 | g cm-2 | 41.96 | cm |
| Critical energy | 91.25 | MeV (for e-) | 88.84 | MeV (for e+) |
| Molière radius | 9.98 | g cm-2 | 9.751 | cm |
| Plasma energy ℏωp | 21.36 | eV | ||
| Muon critical energy | 1163. | GeV |
| Elem | Z | Atomic frac* | Mass frac |
| 1 | |||
| 6 | |||
| 7 | |||
| * calculated from mass fraction data | |||