Anions

Monovalent

Divalent

Trivalent

Fluoride F-

Oxide O2-

Nitride N3-

Chloride Cl-

Sulphide S2-

Phosphate PO4^3-

Bromide Br-

Carbonate CO3^2-

Iodide I-

Sulphite SO3^2-

Hydride H-

Sulphate SO4^2-

Hydroxide OH-

Dichromate(VI) Cr2O7^2-

Nitrite NO2-

Nitrate NO3-

Manganate(VII) MnO4-

Hydrogen sulphate HSO4-

Hydrogen carbonate HCO3-

Ethanoate CH3COO-