Isotopes for TAT
| Isotope | Half-life | Common ion | Ionic radius (Å) | Common coordination number | Hard/soft | pKa (aqueous) |
|---|---|---|---|---|---|---|
| 149Tb | 4.1 h | Tb3+ | 1.04 | 8–9 | Hard | 7.9 |
| 211At | 7.2 h | At+, AtO+ | — | — | — | — |
| 212Bi | 60.6 min | Bi3+ | 1.17 | 8 | Intermediate | 1.1 |
| 213Bi | 45.6 min | Bi3+ | 1.17 | 8 | Intermediate | 1.1 |
| 212Pb (for 212Bi) | 10.6 h | Pb2+ | 1.43 | 8 | Intermediate | 0.9 |
| 223Ra | 11.4 d | Ra2+ | 1.48 | 8–12 | Hard | 3.1 |
| 225Ac | 9.9 d | Ac3+ | 1.12 | 9–10 | Hard | 9.4 |
| 226Th | 30.7 min | Th4+ | 1.05 | >8 | Hard | 3.2 |
| 227Th | 18.7 d | Th4+ | 1.05 | >8 | Hard | 3.2 |
| 230U | 20.8 d | [UO2]2+ | — | 6 | Hard | 4.2 |