Common AP Polyatomic Ions

A complete set of flashcards for the common polyatomic ions required for AP Chemistry, including names and formulas with their respective charges.

Ammonium

$$NH_4^+$$

Hydronium

$$H_3O^+$$

Dihydrogen phosphite

$$H_2PO_3^-$$

Dihydrogen phosphate

$$H_2PO_4^-$$

Hydrogen carbonate

$$HCO_3^-$$

Hydrogen sulfite

$$HSO_3^-$$

Hydrogen sulfate

$$HSO_4^-$$

Nitrite

$$NO_2^-$$

Nitrate

$$NO_3^-$$

Hydroxide

$$OH^-$$

Acetate

$$C_2H_3O_2^-$$

Cyanide

$$CN^-$$

Thiocyanate

$$SCN^-$$

Permanganate

$$MnO_4^-$$

Hypochlorite

$$ClO^-$$

Chlorite

$$ClO_2^-$$

Chlorate

$$ClO_3^-$$

Perchlorate

$$ClO_4^-$$

Hypobromite

$$BrO^-$$

Bromite

$$BrO_2^-$$

Bromate

$$BrO_3^-$$

Perbromate

$$BrO_4^-$$

Hypoiodite

$$IO^-$$

Iodite

$$IO_2^-$$

Iodate

$$IO_3^-$$

Periodate

$$IO_4^-$$

Hydrogen phosphite

$$HPO_3^{2-}$$

Hydrogen phosphate

$$HPO_4^{2-}$$

Carbonate

$$CO_3^{2-}$$

Sulfite

$$SO_3^{2-}$$

Sulfate

$$SO_4^{2-}$$

Thiosulfate

$$S_2O_3^{2-}$$

Silicate

$$SiO_3^{2-}$$

Oxalate

$$C_2O_4^{2-}$$

Chromate

$$CrO_4^{2-}$$

Dichromate

$$Cr_2O_7^{2-}$$

Tartrate

$$C_4H_4O_6^{2-}$$

Peroxide

$$O_2^{2-}$$

Phosphite

$$PO_3^{3-}$$

Phosphate

$$PO_4^{3-}$$

Hypophosphite

$$PO_2^{3-}$$

Arsenite

$$AsO_3^{3-}$$

Arsenate

$$AsO_4^{3-}$$