Naming Compounds That Contain Polyatomic Ions

Vocabulary practice flashcards covering common polyatomic ions, their chemical formulas, and alternate common names.

Polyatomic ions

A charged group of atoms bonded together that have special names.

Ammonium

The polyatomic ion with the formula $NH_4^+$.

Nitrite

The polyatomic ion with the formula $NO_2^-$.

Nitrate

The polyatomic ion with the formula $NO_3^-$.

Sulfite

The polyatomic ion with the formula $SO_3^{2-}$.

Sulfate

The polyatomic ion with the formula $SO_4^{2-}$.

Hydrogen sulfate

The polyatomic ion with the formula $HSO_4^-$ (bisulfate is a widely used common name).

Hydroxide

The polyatomic ion with the formula $OH^-$.

Cyanide

The polyatomic ion with the formula $CN^-$.

Phosphate

The polyatomic ion with the formula $PO_4^{3-}$.

Hydrogen phosphate

The polyatomic ion with the formula $HPO_4^{2-}$.

Dihydrogen phosphate

The polyatomic ion with the formula $H_2PO_4^-$.

Carbonate

The polyatomic ion with the formula $CO_3^{2-}$.

Hydrogen carbonate

The polyatomic ion with the formula $HCO_3^-$ (bicarbonate is a widely used common name).

Hypochlorite

The polyatomic ion with the formula $ClO^-$.

Chlorite

The polyatomic ion with the formula $ClO_2^-$.

Chlorate

The polyatomic ion with the formula $ClO_3^-$.

Perchlorate

The polyatomic ion with the formula $ClO_4^-$.

Acetate

The polyatomic ion with the formula $C_2H_3O_2^-$.

Permanganate

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

Dichromate

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

Chromate

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

Peroxide

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