Polyatomic Ions

Vocabulary flashcards covering common polyatomic ions, their names, and chemical formulas from Table 3.4.

Hydroxide

A polyatomic ion associated with hydrogen, with the formula $OH^-$.

Ammonium

A polyatomic ion associated with nitrogen, with the formula $NH_4^+$.

Nitrate

A polyatomic ion associated with nitrogen, with the formula $NO_3^-$.

Nitrite

A polyatomic ion associated with nitrogen, with the formula $NO_2^-$.

Perchlorate

A polyatomic ion associated with chlorine, with the formula $ClO_4^-$.

Chlorate

A polyatomic ion associated with chlorine, with the formula $ClO_3^-$.

Chlorite

A polyatomic ion associated with chlorine, with the formula $ClO_2^-$.

Hypochlorite

A polyatomic ion associated with chlorine, with the formula $ClO^-$.

Carbonate

A polyatomic ion associated with carbon, with the formula $CO_3^{2-}$.

Hydrogen carbonate (or bicarbonate)

A polyatomic ion associated with carbon, with the formula $HCO_3^-$.

Cyanide

A polyatomic ion associated with carbon, with the formula $CN^-$.

Acetate

A polyatomic ion associated with carbon, with the formula $C_2H_3O_2^-$.

Sulfate

A polyatomic ion associated with sulfur, with the formula $SO_4^{2-}$.

Hydrogen sulfate (or bisulfate)

A polyatomic ion associated with sulfur, with the formula $HSO_4^-$.

Sulfite

A polyatomic ion associated with sulfur, with the formula $SO_3^{2-}$.

Hydrogen sulfite (or bisulfite)

A polyatomic ion associated with sulfur, with the formula $HSO_3^-$.

Phosphate

A polyatomic ion associated with phosphorus, with the formula $PO_4^{3-}$.

Hydrogen phosphate

A polyatomic ion associated with phosphorus, with the formula $HPO_4^{2-}$.

Dihydrogenphosphate

A polyatomic ion associated with phosphorus, with the formula $H_2PO_4^-$.

Phosphite

A polyatomic ion associated with phosphorus, with the formula $PO_3^{3-}$.

Chromate

A polyatomic ion with the formula $CrO_4^{2-}$.

Dichromate

A polyatomic ion with the formula $Cr_2O_7^{2-}$.

Permanganate

A polyatomic ion with the formula $MnO_4^-$.

Peroxide

A polyatomic ion with the formula $O_2^{2-}$.