Average atomic weight: 162.500(1) u
| Isotope | Fraction | Atomic weight/u |
| 156 | 0.00056(3) | 155.9242847(17) |
| 158 | 0.00095(3) | 157.9244159(31) |
| 160 | 0.02329(18) | 159.9252046(20) |
| 161 | 0.18889(42) | 160.9269405(20) |
| 162 | 0.25475(36) | 161.9268056(20) |
| 163 | 0.24896(42) | 162.9287383(20) |
| 164 | 0.28260(54) | 163.9291819(20) |
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)
