Common Polyatomic Ions and Chemical Formulas

Vocabulary flashcards covering the names, formulas, and charges of common polyatomic ions and related chemical species.

Acetate

A $-1$ ion with the chemical formula $C_2H_3O_2^-$ or $CH_3COO^-$.

Bicarbonate

A $-1$ ion with the chemical formula $HCO_3^-$.

Perchlorate

A $-1$ ion with the chemical formula $ClO_4^-$.

Chlorate

A $-1$ ion with the chemical formula $ClO_3^-$.

Chlorite

A $-1$ ion with the chemical formula $ClO_2^-$.

Hypochlorite

A $-1$ ion with the chemical formula $ClO^-$.

Hydroxide

A $-1$ ion with the chemical formula $OH^-$.

Nitrate

A $-1$ ion with the chemical formula $NO_3^-$.

Permanganate

A $-1$ ion with the chemical formula $MnO_4^-$.

Carbonate

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

Chromate

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

Dichromate

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

Peroxide

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

Sulfate

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

Phosphate

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

Ammonium

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

Ammonia

A chemical species with the formula $NH_3$ that has no charge and is not a polyatomic ion.