Polyatomic Ions

$$NH_4^+$$

Ammonium

$$NO_3^-$$

Nitrate

$$NO_2^-$$

Nitrite

$$SO_4^{2-}$$

Sulfate

$$SO_3^{2-}$$

Sulfite

$$HSO_4^-$$

Hydrogen sulfate (Bisulfate)

$$OH^-$$

Hydroxide

$$CN^-$$

Cyanide

$$PO_4^{3-}$$

Phosphate

$$HPO_4^{2-}$$

Hydrogen phosphate

$$H_2PO_4^-$$

Dihydrogen phosphate

$$CO_3^{2-}$$

Carbonate

$$HCO_3^-$$

Hydrogen carbonate (Bicarbonate)

$$ClO_4^-$$

Perchlorate

$$ClO_3^-$$

Chlorate

$$ClO_2^-$$

Chlorite

$$ClO^-$$

Hypochlorite

$$C_2H_3O_2^-$$

Acetate

$$CrO_4^{2-}$$

Chromate

$$Cr_2O_7^{2-}$$

Dichromate

$$MnO_4^-$$

Permanganate

$$O_2^{2-}$$

Peroxide