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 Selenides 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.

Anions | Selenides

Selenide