Common Polyatomic Ions

Acetic acid is an acid containing the polyatomic ion acetate; Oxalate, thiocyanate, and hydride not included in textbook

C₂H₃O₂^-, CH₃COO^-

acetate

CH₃COOH

acetic acid

CO₃^2-

carbonate

HCO₃^-

hydrogen carbonate, bicarbonate

OH^-

hydroxide

NO₂^-

nitrite

NO₃^-

nitrate

CrO₄^2-

chromate

Cr₂O₇^2-

dichromate

PO₄^3-

phosphate

HPO₄^2-

hydrogen phosphate

H₂PO₄^-

dihydrogen phosphate

NH₄⁺

ammonium

ClO^-

hypochlorite

ClO₂^-

chlorite

ClO₃^-

chlorate

ClO₄^-

perchlorate

MnO₄^-

permanganate

SO₃^2-

sulfite

HSO₃^-

hydrogen sulfite, bisulfite

SO₄^2-

sulfate

HSO₄^-

hydrogen sulfate, bisulfate

CN^-

cyanide

SCN^-

thiocyanate

O₂^2-

peroxide

C₂O₄^2-

oxalate

H^-

hydride