Selenite (ion)
Anion composed of selenium and oxygen / From Wikipedia, the free encyclopedia
Not to be confused with Selenite (mineral).
Selenite refers to the anion with the chemical formula SeO2−3. It is the oxyanion of selenium. It is the selenium analog of the sulfite ion, SO2−3. Thus selenite is pyramidal and selenium is assigned oxidation state +4. Selenite also refers to compounds that contains this ion, for example sodium selenite Na2SeO3 which is a common source of selenite.[1] Selenite also refers to the esters of selenous acid, for example dimethyl selenite (CH3)2SeO3.