AP Chem Polyatomic Ions

Hg₂ ²⁺

Mercury (1)

NH₄⁺

Ammonium

NO₂^-

Nitrite

NO₃^-

Nitrate

SO₃^2-

Sulfite

SO₄^2-

Sulfate

HSO₄^-

Hydrogen sulfate (bisulfate)

OH^-

Hydroxide

CN^-

Cyanide

PO₄^3-

Phosphate

HPO₄^2-

Hydrogen phosphate

H₂PO₄^-

Dihydrogen phosphate

NCS^-

Thiocynate

CO₃^2-

Carbonate

HCO₃^-

Hydrogen carbonate (bicarbonate)

CLO^-

Hypochlorite

CLO₂^-

Chlorite

CLO₃^-

Chlorate

CLO₄^-

Perchlorate

C₂H₃O₂^-

Acetate

MnO₄^-

Permanganate

Cr₂O₇^2-

Dichromate

CrO₄^2-

Chromate

O₂^2-

Peroxide

C₂O₄^2-

Oxalate

S₂O₃^2-

Thiosulfate