| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.44034 | |||
| Specific gravity | 3.860 | g cm-3 | ||
| Mean excitation energy | 329.5 | eV | ||
| Minimum ionization | 1.393 | MeV g-1cm2 | 5.378 | MeV cm-1 |
| Nuclear collision length | 87.6 | g cm-2 | 22.71 | cm |
| Nuclear interaction length | 143.3 | g cm-2 | 37.12 | cm |
| Pion collision length | 113.1 | g cm-2 | 29.31 | cm |
| Pion interaction length | 172.8 | g cm-2 | 44.76 | cm |
| Radiation length | 10.86 | g cm-2 | 2.813 | cm |
| Critical energy | 16.33 | MeV (for e-) | 15.83 | MeV (for e+) |
| Molière radius | 14.10 | g cm-2 | 3.652 | cm |
| Plasma energy ℏωp | 37.57 | eV | ||
| Muon critical energy | 266. | GeV |
| Elem | Z | Atomic frac* | Mass frac |
| 57 | |||
| 17 | |||
| * calculated from mass fraction data | |||