Polyatomic Ions

CH₃COO^- (C₂H₃O₂^-)

acetate

NO2^-

nitrite

NO₃^-

nitrate

CN^-

cyanide

OH^-

hydroxide

MnO₄^-

permanganate

ClO^-

hypochlorite (B,F,and F may be substitued for Cl)

ClO₂^-

chlorite (B,F,and F may be substitued for Cl)

ClO₃^-

chlorate (B,F,and F may be substitued for Cl)

ClO₄^-

perchlorate

SO₃^-2

sulfite

SO₄^-2

sulfate

CO₃^-2

carbonate

CrO₄^-2

chromate

O₂^-2

peroxide

PO₃^-3

phosphite

PO₄^-3

phosphate

NH₄⁺

ammonium

H₂PO₄^-

dihydrogen phosphate

HSO₃^-

hydrogen sulfite (bisulfite)

HSO₄^-

hydrogen sulfate (bisulfate)

HCO₃^-

hydrogen carbonate (bicarbonate)

HPO₄^-2

hydrogen phosphate

C₂O₄^-2

oxalate

S₂O₃^-2

thiosulfate

C₂O₇^-2

dichromate

BO₃^-3

borate

Hg₂⁺²

mercury (I)