Polyatomic Ions

Acetate

C₂H₃O₂^–

Carbonate

CO₃^2–

Hydrogen carbonate

HCO₃^–

Cyanide

CN^–

Nitrate

NO₃^–

Nitrite

NO₂^–

Ammonium

NH₄⁺

Hydroxide

OH^–

Peroxide

O₂^2–

Sulfite

SO₃^2–

Sulfate

SO₄^2-

Hydrogen sulfate

HSO₄^–

Thiosulfate

S₂O₃^2–

Phosphate

PO₄^3–

Hypochlorite

ClO^–

Chlorite

ClO₂^–

Chlorate

ClO₃^–

Perchlorate

ClO₄^–

Chromate

CrO₄^2–

Dichromate

Cr₂O₇^2–

Permanganate

MnO₄^–