Polyatomic Ions

NH₄⁺

Ammonium

NO₂^-

Nitrite 

NO₃^-

Nitrate 

SO₃^2-

Sulfite

SO₄^2-

Sulfate

PO₃^3-

Phosphite

PO₄^3-

Phosphate

CO₃^2-

Carbonate 

HCO₃^-

Hydrogencarbonate 

ClO^-

Hypochlorite

ClO₂^-

Chlorite 

ClO₃^-

Chlorate

ClO₄^-

Perchlorate

OH^-

Hydroxide

CH₃COO^-

Acetate 

CN^-

Cyanide

CrO₄^2-

Chromate

MnO₄^-

Permanganate 

NH4

MnO4

SO(all)

PO(all)

HCO3

CO2

ClO

CrO4

OH

CH3COO

CN

PO

ClO

CrO

NO

SO

CO