Polyatomic Ions

H3O +

H3O +

Hydronium

C2H3O2-

Acetate

N3-

Azide

CN-

Cyanide

Cr2O7 2-

Dichromate

NH4+

Ammonium

Hg2 2+

Mercury (I)

CO3 2-

Carbonate

ClO3-

Chlorate

ClO2-

Chlorite

CrO4 2-

Chromate

H2PO4-

dihydrogen phosphate

HCO3-

Hydrogen Carbonate

HPO4 2-

hydrogen phosphate

HSO4-

Hydrogen Sulfate

OH-

Hydroxide

ClO-

Hypochlorite

NO3-

Nitrate

NO2-

Nitrite

C2O4 2-

Oxalate

ClO4-

Perchlorate

MnO4^-

Permanganate

O2 2-

Peroxide

PO4 3-

Phosphate

PO3 3-

Phosphite

SO4 2-

Sulfate

SO3 2-

Sulfite

SCN-

Thiocyanate