Anions

Monovalent

An ion with a charge of +1.

Divalent

An ion with a charge of +2.

Trivalent

An ion with a charge of +3.

Fluoride

An anion of fluorine with a charge of -1 (F-).

Oxide

An anion of oxygen with a charge of -2 (O2-).

Nitride

An anion of nitrogen with a charge of -3 (N3-).

Chloride

An anion of chlorine with a charge of -1 (Cl-).

Sulphide

An anion of sulfur with a charge of -2 (S2-).

Phosphate

A polyatomic ion with the formula PO4^3-.

Bromide

An anion of bromine with a charge of -1 (Br-).

Carbonate

A polyatomic ion with the formula CO3^2-.

Iodide

An anion of iodine with a charge of -1 (I-).

Sulphite

A polyatomic ion with the formula SO3^2-.

Hydride

An anion of hydrogen with a charge of -1 (H-).

Sulphate

A polyatomic ion with the formula SO4^2-.

Hydroxide

A polyatomic ion with the formula OH-.

Dichromate(VI)

A polyatomic ion with the formula Cr2O7^2-.

Nitrite

A polyatomic ion with the formula NO2-.

Nitrate

A polyatomic ion with the formula NO3-.

Manganate(VII)

A polyatomic ion with the formula MnO4-.

Hydrogen sulphate

A polyatomic ion with the formula HSO4-.

Hydrogen carbonate

A polyatomic ion with the formula HCO3-.

Ethanoate

A polyatomic ion with the formula CH3COO-.