Polyatomic ions

acetate

C₂H₃O₂^-

Ammonium

NH₄⁺

Arsenite

AsO₃³⁻

Arsenate

AsO₄^3-

Borate

BO₃^3-

Bromate

BrO₃^-

Carbonate

CO₃^2-

Chlorite

ClO₂^-

Chlorate

ClO₃^-

Chromate

CrO₄^2-

Cyanide

CN^-

Dichromate

Cr₂O₇^2-

Hydrogen Carbonate (Bicarbonate)

HCO₃^-

Hydroxide

OH^-

Hypochlorite

ClO^-

iodate

IO₃^-

Manganate

MnO₄^2-

Nitrate

NO₃^-

Nitrite

NO₂^-

Oxalate

C₂O₄^2-

Perchlorate

ClO₄^-

Permanganate

MnO₄^-

Peroxide

O₂^2-

Phosphate

PO₄3-

Phosphite

PO₃^3-

Sulfate

SO₄^2-

Sulfite

SO₃^2-

Thiocyanate

SCN^-