| Quantity | Value | Units | Value | Units |
| Atomic number | 59 | |||
| Atomic mass | 140.90765(2) | g mole-1 | ||
| Density | 6.71 | g cm-3 | ||
| Mean excitation energy | 535.0 | eV | ||
| Minimum ionization | 1.244 | MeV g-1cm2 | 8.344 | MeV cm-1 |
| Nuclear collision length | 102.7 | g cm-2 | 15.31 | cm |
| Nuclear interaction length | 176.1 | g cm-2 | 26.24 | cm |
| Pion collision length | 126.7 | g cm-2 | 18.89 | cm |
| Pion interaction length | 203.3 | g cm-2 | 30.30 | cm |
| Radiation length | 7.76 | g cm-2 | 1.156 | cm |
| Critical energy | 10.21 | MeV (for e-) | 9.87 | MeV (for e+) |
| Molière radius | 16.11 | g cm-2 | 2.401 | cm |
| Plasma energy |
48.30 | eV | ||
| Muon critical energy | 183. | GeV |