Polyatomics

C₂H₃O₂^–

acetate

ClO^–

hypochlorite

ClO₂^–

chlorite

ClO₃^–

chlorate

ClO₄^–

perchlorate

MnO₄^–

permanganate

NH₄⁺

ammonium

CN^–

cyanide

NO₂^–

nitrite

NO₃^–

nitrate

OH^–

hydroxide

O₂^2–

peroxide

CrO₄^2–

chromate

Cr₂O₇^2–

dichromate

PO₄^3–

phosphate

HPO₄^2–

hydrogen phosphate

H₂PO₄^–

dihydrogen phosphate

CO₃^2–

carbonate

HCO₃^–

hydrogen carbonate (bicarbonate)

SO₃^2–

sulfite

SO₄^2–

sulfate

HSO₄^–

hydrogen sulfate (bisulfate)