Common Polyatomic Ions

C₂H₃O₂^1-

Acetate

HCO₃^1-

Bicarbonate

NO₂^1-

Nitrite

NO₃^1-

Nitrate

CN^1-

Cyanide

OH^1-

Hydroxide

MnO₄^1-

Permanganate

ClO^1-

Hypochlorite

ClO₂^1-

Chlorite

ClO₃^1-

Chlorate

ClO₄^1-

Perchlorate

SO₃^2-

Sulfite

SO₄^2-

Sulfate

CO₃^2-

Carbonate

C₂O₄^2-

Oxalate

CrO₄^2-

Chromate

Cr₂O₇^2-

Dichromate

PO₃^3-

Phosphite

PO₄^3-

Phosphate

HCl

hydrochloric acid

H₂SO₄

sulfuric acid

HNO₃

nitric acid