Polyatomic Ions

Name

Formula

Ammonium

NH₄⁺

Bromate

BrO₃^-

Cyanide

CN^-

Acetate

C₂H₃O₂^-

Perchlorate

ClO₄^-

Chlorate

ClO₃^-

Chlorite

ClO₂^-

Hypochlorite

ClO^-

Iodate

IO₃^-

Permanganate

MnO₄^-

Nitrate

NO₃^-

Nitrite

NO₂^-

Hydroxide

OH^-

Hydrogen carbonate (bicarbonate)

HCO₃^-

Hydrogen sulfate (bisulfate)

HSO₄^-

Thiocyanate

SCN^-

Carbonate

CO₃^2-

Chromate

CrO₄^2-

Dichromate

Cr₂O₇^2-

Sulfate

SO₄^2-

Sulfite

SO₃^2-

Phosphate

PO₄^3-

Phosphite

PO₃^3-