Selenide

The selenide ion is Se²⁻.

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

Examples

hydrogen selenide, H₂Se
sodium selenide, Na₂Se

See for a list.

Discussion

The chemistry of the selenides parallels that of the sulfides.

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

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