| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.43907 | |||
| Specific gravity | 6.730 | g cm-3 | ||
| Mean excitation energy | 365.9 | eV | ||
| Minimum ionization | 1.366 | MeV g-1cm2 | 9.196 | MeV cm-1 |
| Nuclear collision length | 86.2 | g cm-2 | 12.80 | cm |
| Nuclear interaction length | 138.1 | g cm-2 | 20.52 | cm |
| Pion collision length | 112.9 | g cm-2 | 16.78 | cm |
| Pion interaction length | 170.5 | g cm-2 | 25.34 | cm |
| Radiation length | 9.79 | g cm-2 | 1.454 | cm |
| Critical energy | 14.21 | MeV (for e-) | 13.75 | MeV (for e+) |
| Molière radius | 14.61 | g cm-2 | 2.171 | cm |
| Plasma energy ℏωp | 49.53 | eV | ||
| Muon critical energy | 234. | GeV |
| Elem | Z | Atomic frac* | Mass frac |
| 71 | |||
| 13 | |||
| 8 | |||
| * calculated from mass fraction data | |||