Polyatomic Ions

Chemistry

PO₄^3-

phosphate

PO₃^3-

phosphite

HPO₄^2-

hydrogen phosphate

H₂PO₄^-

dihydrogen phosphate

SO₄^2-

sulfate

SO₃^2-

sulfite

S₂O₃^2-

thiosulfate

S₂O₈^2-

persulfate

HSO₄^-

bisulfate (or hydrogen sulfate)

HSO₃^-

bisulfite (or hydrogen sulfite)

CrO₄^2-

chromate

Cr₂O₇^2-

dichromate

MnO₄^-

permanganate

Hg₂²⁺

mercury(I) or mercurous

NO₃^-

nitrate

NO₂^-

nitrite

N₃^-

azide

BO₃^3-

borate

ClO₄^-

perchlorate

ClO₃^-

chlorate

ClO₂^-

chlorite

ClO^-

hypochlorite

CN^-

cyanide

CNO^-

cyanate

CNS^-

thiocyanate

OH^-

hydroxide

O₂^2-

peroxide

CO₃^2-

carbonate

HCO₃^-

bicarbonate (hydrogen carbonate)

C₂H₃O₂^- (CH₃COO^-)

acetate

C₂O₄^2-

oxalate

NH₄⁺

ammonium

H₃O⁺

hydronium