Average atomic weight: 192.217(3) u
| Isotope | Fraction | Atomic weight/u |
| 191 | 0.373(2) | 190.9605893(21) |
| 193 | 0.627(2) | 192.9629216(21) |
Atomic weights and isotopic compositions were obtained from NIST Database 144
The Atomic Line List does not contain any data for this element
(Atomic Line List v3.00b5)
