Table 2.
Selection of various characteristics demonstrating the striking differences between 227Th and its first three progenitors in relation to their diverse coordination preferences.
| 227Th | 223Ra | 219Rn | 215Po | |
|---|---|---|---|---|
| Character | Actinide | Alkaline earth metal | Noble gas | Post-transition metal |
| Oxidation state * | +4 | +2 | 0 | +2 & +4 |
| Effective ionic radius [pm] # | 94 (6) | 148 (8) | n.d. | 94 (6) $ |
* Most common oxidation state; # Number in brackets determines the coordination number; $ Effective ionic radius for oxidation state +4; n.d. = not determined; Data for effective ionic radii were derived from http://abulafia.mt.ic.ac.uk/shannon/ptable.php.