Polyatomic Ions

Flashcards covering key polyatomic ions, their formulas, and definitions for study purposes.

Polyatomic Ion

Contains more than one atom.

NH_{4}^{+}

Ammonium

H_{3}O^{+}

Hydronium

OH^{-}

Hydroxide

CN^{-}

Cyanide

O_{2}^{2-}

Peroxide

NO_{3}^{-}

Nitrate

NO_{2}^{-}

Nitrite

SO_{4}^{2-}

Sulfate

SO_{3}^{2-}

Sulfite

HSO_{4}^{-}

Hydrogen sulfate (bisulfate)

HSO_{3}^{-}

Hydrogen sulfite (bisulfite)

SCN^{-}

Thiocyanate

ClO_{4}^{-}

Perchlorate

ClO_{3}^{-}

Chlorate

ClO_{2}^{-}

Chlorite

ClO^{-}

Hypochlorite

CO_{3}^{2-}

Carbonate

HCO_{3}^{-}

Hydrogen carbonate (bicarbonate)

MnO_{4}^{-}

Permanganate

AsO_{4}^{3-}

Arsenate

PO_{4}^{3-}

Phosphate

HPO_{4}^{2-}

Hydrogen phosphate

H₂PO₄^2-

Dihydrogen phosphate

CrO_{4}^{2-}

Chromate

Cr₂O₇^2-

Dichromate

CH_{3}COO^{-}

Acetate

C₂H₃O₂

Another representation of acetate