Common Polyatomic Ions

NH4^1+

NH4^1+

Ammonium ion

C2H3O2^1-

Acetate ion

CO3²-

Carbonate ion

Ammonium ion

NH4^1+

Acetate ion

C2H3O2^1-

Carbonate ion

CO3²-

ClO3^1-

Chlorate ion

ClO2^-1

Chlorite ion

CrO4²-

Chromate ion

Chlorate ion

ClO3^1-

Chlorite ion

ClO2^-1

Chromate ion

CrO4²-

CN^-1

Cyanide ion

Cr2O7²-

Dichromate ion

HCO3^-1

Hydrogen Carbonate ion

Cyanide ion

CN^-1

Dichromate ion

Cr2O7²-

Hydrogen Carbonate ion

HCO3^-1

OH^-1

Hydroxide ion

NO3^-1

Nitrate ion

NO2^-1

Nitrite ion

PO4^-3

Phospate ion

Hydroxide ion

OH^-1

Nitrate ion

NO3^-1

Nitrite ion

NO2^-1

Phospate ion

PO4^-3