Common Polyatomic Ions and Charges

Vocabulary flashcards covering the names, chemical formulas, and charges of common polyatomic ions from the reference list.

Acetate

A polyatomic ion with the formula $C_2H_3O_2^-$ or $CH_3COO^-$ and a charge of $-1$.

Ammonium

A polyatomic ion with the formula $NH_4^+$ and a charge of $+1$.

Hydronium

A polyatomic ion with the formula $H_3O^+$ and a charge of $+1$.

Carbonate

A polyatomic ion with the formula $CO_3^{2-}$ and a charge of $-2$.

Hydrogen carbonate (bicarbonate)

A polyatomic ion with the formula $HCO_3^-$ and a charge of $-1$.

Hypochlorite

A polyatomic ion with the formula $ClO^-$ and a charge of $-1$.

Chlorite

A polyatomic ion with the formula $ClO_2^-$ and a charge of $-1$.

Chlorate

A polyatomic ion with the formula $ClO_3^-$ and a charge of $-1$.

Perchlorate

A polyatomic ion with the formula $ClO_4^-$ and a charge of $-1$.

Chromate

A polyatomic ion with the formula $CrO_4^{2-}$ and a charge of $-2$.

Dichromate

A polyatomic ion with the formula $Cr_2O_7^{2-}$ and a charge of $-2$.

Cyanide

A polyatomic ion with the formula $CN^-$ and a charge of $-1$.

Hydroxide

A polyatomic ion with the formula $OH^-$ and a charge of $-1$.

Nitrite

A polyatomic ion with the formula $NO_2^-$ and a charge of $-1$.

Nitrate

A polyatomic ion with the formula $NO_3^-$ and a charge of $-1$.

Permanganate

A polyatomic ion with the formula $MnO_4^-$ and a charge of $-1$.

Peroxide

A polyatomic ion with the formula $O_2^{2-}$ and a charge of $-2$.

Phosphite

A polyatomic ion with the formula $PO_3^{3-}$ and a charge of $-3$.

Phosphate

A polyatomic ion with the formula $PO_4^{3-}$ and a charge of $-3$.

Hydrogen phosphate

A polyatomic ion with the formula $HPO_4^{2-}$ and a charge of $-2$.

Sulfite

A polyatomic ion with the formula $SO_3^{2-}$ and a charge of $-2$.

Sulfate

A polyatomic ion with the formula $SO_4^{2-}$ and a charge of $-2$.

Hydrogen sulfate (bisulfate)

A polyatomic ion with the formula $HSO_4^-$ and a charge of $-1$.