Selenide

The selenide ion is Se2&minus;.

A selenide is a chemical compound in which selenium serves as an anion with oxidation number of &minus;2, much as sulfur does in a sulfide.

Examples

 * hydrogen selenide, H2Se
 * sodium selenide, Na2Se

See category for a list.

Discussion
The chemistry of the selenides parallels that of the sulfides.

Similar to sulfide, for an aqueous solution, selenide ion, Se2&minus;, is prevalent only in very basic conditions. In neutral conditions, hydrogen selenide ion, HSe&minus;, is most common. In acid conditions, hydrogen selenide, H2Se, is formed.