Common Polyatomic Ions

Vocabulary practice flashcards covering names and chemical formulas of common polyatomic ions.

Ammonium

A polyatomic cation with the chemical formula $NH_4^+$.

Hydronium

A polyatomic cation with the chemical formula $H_3O^+$.

Peroxide

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

Hydroxide

A polyatomic anion with the chemical formula $OH^-$.

Acetate

A polyatomic anion with the chemical formula $CH_3COO^-$.

Cyanide

A polyatomic anion with the chemical formula $CN^-$.

Azide

A polyatomic anion with the chemical formula $N_3^-$.

Carbonate

A polyatomic anion with the chemical formula $CO_3^{2-}$.

Bicarbonate

A polyatomic anion with the chemical formula $HCO_3^-$.

Dihydrogen phosphate

A polyatomic anion with the chemical formula $H_2PO_4^-$.

Perchlorate

A polyatomic anion with the chemical formula $ClO_4^-$.

Chlorate

A polyatomic anion with the chemical formula $ClO_3^-$.

Chlorite

A polyatomic anion with the chemical formula $ClO_2^-$.

Hypochlorite

A polyatomic anion with the chemical formula $ClO^-$.

Chromate

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

Dichromate

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

Permanganate

A polyatomic anion with the chemical formula $MnO_4^-$.

Nitrate

A polyatomic anion with the chemical formula $NO_3^-$.

Nitrite

A polyatomic anion with the chemical formula $NO_2^-$.

Sulfate

A polyatomic anion with the chemical formula $SO_4^{2-}$.

Hydrogen sulfate

A polyatomic anion with the chemical formula $HSO_4^-$.

Sulfite

A polyatomic anion with the chemical formula $SO_3^{2-}$.

Hydrogen sulfite

A polyatomic anion with the chemical formula $HSO_3^-$.

Phosphate

A polyatomic anion with the chemical formula $PO_4^{3-}$.

Hydrogen phosphate

A polyatomic anion with the chemical formula $HPO_4^{2-}$.