Selenite (ion)
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Not to be confused with Selenite (mineral).
Structure of selenite
Space-filling model of selenite
The selenite anion is a selenium oxoanion with the chemical formula SeO32−.
A selenite (compound) is a compound that contains this ion.
In slightly acid conditions, the hydrogenselenite ion, HSeO3−, is formed; in more acidic conditions selenous acid, H2SeO3, exists.
Most selenite salts can be formed by heating the relevant metal oxide with selenium dioxide, e.g.:
- Na2O + SeO2 → Na2SeO3.
See Category:Selenites for a list.
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