Average atomic weight: 107.8682(2) u
| Isotope | Fraction | Atomic weight/u |
| 107 | 0.51839(8) | 106.9050916(26) |
| 109 | 0.48161(8) | 108.9047553(14) |
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)
