Polyatomic Ions

Ammonium

Formula (NH4) charge= +1

Acetate

Formula (CH3CO2) Charge= -1

Bromate

Formula (BrO3) Charge= -1

Carbonate

Formula ( CO3) Charge= -2

Hydrogen Carbonate

Formula (HCO3) Charge= -1

Hydroxide

Formula (OH) Charge= -1

Iodate

Formula (IO3) Charge -1

Fluorate

Formula (FO3) Charge -1

Chlorite

Formula (ClO2) Charge -1

Perchlorate

Formula (ClO4) Charge -1

Hypochlorite

Formula (ClO) Charge -1

Nitrate

Formula (NO3) Charge -1

Nitrite

Formula (NO2) Charge -1

Cyanide

Formula (CN) Charge -1

Permanganate

Formula (MNO4) Charge -1

Peroxide

Formula (O2) Charge -2

Phosphate

Formula (PO4) Charge -3

Phosphite

Formula (PO3) Charge -3

Sulfate

Formula (SO4) Charge -2

Sulfite

Formula (SO3) Charge -2

Hydrogen Sulfate Ion

Formula (HSO4) Charge -1

Hydrogen Sulfite Ion

Formula (HSO3) Charge -1

Chromate

Formula (CrO4) Charge -2