Common Polyatomic Ions

A set of vocabulary flashcards for learning the names and chemical formulas of common polyatomic ions from Table 3.4.

Acetate

$$C_2H_3O_2^-$$

Carbonate

$$CO_3^{2-}$$

Hydrogen carbonate (or bicarbonate)

$$HCO_3^-$$

Hydroxide

$$OH^-$$

Nitrite

$$NO_2^-$$

Nitrate

$$NO_3^-$$

Chromate

$$CrO_4^{2-}$$

Dichromate

$$Cr_2O_7^{2-}$$

Phosphate

$$PO_4^{3-}$$

Hydrogen phosphate

$$HPO_4^{2-}$$

Dihydrogen phosphate

$$H_2PO_4^-$$

Ammonium

$$NH_4^+$$

Hypochlorite

$$ClO^-$$

Chlorite

$$ClO_2^-$$

Chlorate

$$ClO_3^-$$

Perchlorate

$$ClO_4^-$$

Permanganate

$$MnO_4^-$$

Sulfite

$$SO_3^{2-}$$

Hydrogen sulfite (or bisulfite)

$$HSO_3^-$$

Sulfate

$$SO_4^{2-}$$

Hydrogen sulfate (or bisulfate)

$$HSO_4^-$$

Cyanide

$$CN^-$$

Peroxide

$$O_2^{2-}$$