Actinium(III) hydroxide

Actinium(III) hydroxide
Names
Other names
Actinium hydroxide
Identifiers
3D model (JSmol)
  • InChI=1S/Ac.3H2O/h;3*1H2/q+3;;;/p-3
    Key: FXNGTWJQBRAZDM-UHFFFAOYSA-K
  • [Ac+3].[OH-].[OH-].[OH-]
Properties
Ac(OH)3
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).

Actinium(III) hydroxide is a white radioactive solid with the chemical formula of Ac(OH)3.

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

References

  1. ^ a b Tang, Renhuan; Liu, Yuanfang; Zhang, Qinglian; Zhang, Zhiyao. Series of Inorganic Chemistry. Volume 10. Actinides, Transactinides. 4.4 Actinium compounds. pp 75. ISBN 978-7-03-030572-5 (in Chinese)