Polyatomic ions

H2PO4-

H2PO4-

dihydrogen phosphate

C2H3O2-

Acetate

HSO3-

Hydrogen Sulfite

HSO4-

Hydrogen Sulfate

HCO3-

Hydrogen Carbonate

NO2-

Nitrite

NO3-

Nitrate

CN-

Cyanide

OH-

Hydroxide

MnO4-

Permanganate

CIO-

Hypochlorite

CIO2-

Chlorite

CIO3-

Chlorate

CIO4-

Perchlorate

HPO4 2-

hydrogen phosphate

C2O4 2-

Oxalate

SO3 2-

Sulfite

SO4 2-

Sulfate

CO3 2-

Carbonate

CrO4 2-

Chromate

Cr2O7 2-

Dichromate

SiO3 2-

Silicate

PO3 3-

Phosphite

PO4 3-

Phosphate

NH4+

Ammonium