Common Polyatomic Ions

Vocabulary flashcards covering the names and chemical formulas of essential polyatomic ions.

Hydronium

A polyatomic ion with the chemical formula $H_3O^+$

Hydroxide

A polyatomic ion with the chemical formula $OH^-$

Nitrate

A polyatomic ion with the chemical formula $NO_3^-$

Nitrite

A polyatomic ion with the chemical formula $NO_2^-$

Sulfate

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

Sulfite

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

Chlorate

A polyatomic ion with the chemical formula $ClO_3^-$

Chlorite

A polyatomic ion with the chemical formula $ClO_2^-$

Carbonate

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

Hydrogen carbonate (bicarbonate)

A polyatomic ion with the chemical formula $HCO_3^-$

Chromate

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

Dichromate

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

Phosphate

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

Hydrogen phosphate

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

Permanganate

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

Ammonium

A polyatomic ion with the chemical formula $NH_4^+$

Cyanide

A polyatomic ion with the chemical formula $CN^-$

Acetate

A polyatomic ion with the chemical formula $C_2H_3O_2^-$