Polyatomic Ions

NH₄⁺

ammonium

H3O⁺

hydronium

CN^-

cyanide

OH^-

hydroxide

ClO₄^-

perchlorate

ClO₃^-

chlorate

ClO₂^-

chlorite

ClO^-

hypochlorite

BrO₄^-

perbromate

BrO₃^-

bromate

BrO₂^-

bromite

BrO^-

hypobromite

IO₄^-

periodate

IO₃^-

iodate

IO₂^-

iodite

IO^-

hypoiodite

NO₃^-

nitrate

NO₂^-

nitrite

MnO₄^-

permanganate

HCO₃^-

hydrogen carbonate

HSO₃^-

hydrogen sulfite

HSO₄^-

hydrogen sulfate

C2H3O₂^-

acetate

H2PO₄^-

dihydrogen phosphate

SO₄^2-

sulfate

SO₃^2-

sulfite

CrO₄^2-

chromate

Cr2O₇^2-

dichromate

CO₃^2-

carbonate

HPO₄^2-

hydrogen phosphate

O₂^2-

peroxide

C2O₄^2-

oxalate

PO₄^3-

phosphate

PO₃^3-

phosphite

BO₃^3-

borate

AsO₄^3-

arsenate

AsO₃^3-

arsenite