Polyatomic ions

NH₄⁺

Ammonium

CH₃CO₂^-

Acetate

CN^-

Cyanide

ClO^-

Hypochlorite

ClO₂^-

Chlorite

ClO₃^-

Chlorate

ClO₄^-

Perchlorate

H₂PO₄^-

Dihydrogen phosphate

HCO₃^-

Hydrogen carbonate

HSO₄^-

Hydrogen sulfate

OH^-

Hydroxide

MnO₄^-

Permanganate

NO₂^-

Nitrite

NO₃^-

Nitrate

CO₃^2-

Carbonate

CrO₄^2-

Chromate

Cr₂O₇^2-

Dichromate

O₂^2-

Peroxide

HPO₄^2-

Hydrogen phosphate

SO₃^2-

Sulfite

SO₄^2-

Sulfate

S₂O₃^2-

Thiosulfate

PO₄^3-

Phosphate