Actinium(III) hydroxide
Chemical compound
From Wikipedia, the free encyclopedia
Actinium(III) hydroxide is a white radioactive solid with the chemical formula of Ac(OH)3.
| Names | |
|---|---|
| Other names
Actinium hydroxide | |
| Identifiers | |
3D model (JSmol) |
|
| |
| |
| Properties | |
| Ac(OH)3 | |
| Molar mass | 278 g/mol (227Ac) |
| Appearance | white solid |
| 0.021 in water (20 °C) | |
| Related compounds | |
Other anions |
actinium(III) oxide |
Other cations |
scandium(III) hydroxide yttrium(III) hydroxide lanthanum(III) hydroxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Preparation
Actinium(III) hydroxide may be formed from soluble actinium salts and alkalis or ammonia water, and the resulting gel is precipitated as the product:[1]
- Ac3+ + 3 OH− → Ac(OH)3↓
Its solubility is slightly greater than that of lanthanum hydroxide, but it is still insoluble in water.
Chemical properties
Actinium(III) hydroxide is an alkaline hydroxide, it can react with acids to obtain actinium salts:[1]
- Ac(OH)3 + 3 HNO3 → Ac(NO3)3 + 3 H2O