Common Polyatomic Ions

Vocabulary flashcards covering common polyatomic cations and anions with their corresponding charges and chemical formulas.

Ammonium

$$NH_4^+$$

Acetate

$CH_3COO^-$ or $C_2H_3O_2^-$

Bromate

$$BrO_3^-$$

Hypochlorite

$$ClO^-$$

Chlorite

$$ClO_2^-$$

Chlorate

$$ClO_3^-$$

Perchlorate

$$ClO_4^-$$

Cyanide

$$CN^-$$

Dihydrogen phosphate

$$H_2PO_4^-$$

Hydrogen carbonate/bicarbonate

$$HCO_3^-$$

Hydrogen sulfate/bisulfate

$$HSO_4^-$$

Hydroxide

$$OH^-$$

Nitrite

$$NO_2^-$$

Nitrate

$$NO_3^-$$

Iodate

$$IO_3^-$$

Periodate

$$IO_4^-$$

Permanganate

$$MnO_4^-$$

Carbonate

$$CO_3^{2-}$$

Chromate

$$CrO_4^{2-}$$

Dichromate

$$Cr_2O_7^{2-}$$

Hydrogen phosphate

$$HPO_4^{2-}$$

Oxalate

$$C_2O_4^{2-}$$

Peroxide

$$O_2^{2-}$$

Sulfite

$$SO_3^{2-}$$

Sulfate

$$SO_4^{2-}$$

Thiosulfate

$$S_2O_3^{2-}$$

Phosphite

$$PO_3^{3-}$$

Phosphate

$$PO_4^{3-}$$

Arsenate

$$AsO_4^{3-}$$