| Oxidation State | Substances |
| ThII | ThO, ThH2 |
| ThIII | ThI3 |
| ThIV | ThO2 , [Th (H2O)x ]4+ (aq), ThF4 , ThCl4 , etc., |
| ThF73-, Th4+ salts , complexes |
Thorium: Properties
Compound Substances
| Oxidation State | Substances |
| ThII | ThO, ThH2 |
| ThIII | ThI3 |
| ThIV | ThO2 , [Th (H2O)x ]4+ (aq), ThF4 , ThCl4 , etc., |
| ThF73-, Th4+ salts , complexes |