ap polyatomics

Ammonium

$$NH_4^+$$

Acetate

$$C_2H_3O_2^-$$

Bromate

$$BrO_3^-$$

Perchlorate

$$ClO_4^-$$

Chlorate

$$ClO_3^-$$

Chlorite

$$ClO_2^-$$

Hypochlorite

$$ClO^-$$

Cyanide

$$CN^-$$

Dihydrogen phosphate

$$H_2PO_4^-$$

Hydrogen carbonate (bicarbonate)

$$HCO_3^-$$

Hydrogen sulfate (bisulfate)

$$HSO_4^-$$

Hydrogen sulfite (bisulfite)

$$HSO_3^-$$

Hydroxide

$$OH^-$$

Iodate

$$IO_3^-$$

Nitrate

$$NO_3^-$$

Nitrite

$$NO_2^-$$

Permanganate

$$MnO_4^-$$

Thiocyanate

$$SCN^-$$

Carbonate

$$CO_3^{2-}$$

Dichromate

$$Cr_2O_7^{2-}$$

Chromate

$$CrO_4^{2-}$$

Oxalate

$$C_2O_4^{2-}$$

Selenate

$$SeO_4^{2-}$$

Silicate

$$SiO_4^{4-}$$

Sulfate

$$SO_4^{2-}$$

Sulfite

$$SO_3^{2-}$$

Peroxide

$$O_2^{2-}$$

Phosphate

$$PO_4^{3-}$$

Phosphite

$$PO_3^{3-}$$

Mercury(I) / Mercurous

$$Hg_2^{2+}$$

Mercury(II)

$$Hg^{2+}$$