Poliatomic ions: Anions & Cations

Ammonium

NH₄⁺

Hydronium

H₃O⁺

Peroxide

O₂^2-

Hydroxide

OH^-

Acetate

CH₃COO^-

Cyanide

CN^-

Azide

N₃^-

Carbonate

CO₃^2-

Bicarbonate

HCO₃^-

Nitrate

NO₃^-

Nitrite

NO₂^-

Sulfate

SO₄^2-

Hydrogen sulfate

HSO₄^-

Sulfite

SO₃^2-

Hydrogen sulfite

HSO₃^-

Phosphate

PO₄^3-

Hydrogen phosphate

HPO₄^2-

Dihydrogen phosphate

H₂PO₄^-

Perchlorate

ClO₄^-

chlorate

ClO₃^-

chlorite

ClO₂^-

hypochlorite

ClO^-

chromate

CrO₄^2-

dichromate

Cr₂O₇^2-

permanganate

MnO₄^-