Bromide

Definition

A bromide ion is an bromine atom with charge -1.

Compounds with bromine in formal oxidation state -1 are called bromides. This can include ionic compounds such as caesium bromide or basically covalent compounds such as sulfur dibromide. You can test for a bromide ion by adding dilute nitric acid HNO₃. Then add silver nitrate AgNO₃. A cream precipitate forms that disappears in concentrated ammonia solution.

Examples

• hydrogen bromide (HBr)
• sodium bromide (NaBr)
• carbon tetrabromide (CBr₄)
• sulfur dibromide (SBr₂)

See category for a bigger list.