Chem Polyatomic Ions

ammonium

NH₄⁺1

acetate

C₂H₃O⁻₂ or CH₃OOO^–1

hydrogen carbonate

HCO₃^–1

hypochlorite

ClO^–1

chlorite

ClO₂^–1

chlorate

ClO₂^–1

perchlorate

ClO₄^–1

cyanide

CN^–1

hydroxide

OH⁻¹

nitrite

NO₂^-1

nitrate

NO₃^-1

permanganate

Mn₄^-1

carbonate

CO₃^-2

chromate

CrO₄^-2

dichromate

Cr₂O₇^-2

peroxide

O₂^-2

sulfite

SO₃^-2

sulfate

SO₄^-2

phosphite

PO₃^-3

phosphate

PO₃^-3