Naming polyatomic acids

OH^-

hydroxide ion

CN^-

cyanide

SCN^-

^thiocynate

MnO₄^-

permanganate

NO₂^-

nitrite

NO₃^-

nitrate

ClO^-

hypochlorite

ClO₂^-

chlorite

ClO₄^-

perchlorate

HCO₃^-

bicarbonate or hydrogen carbonate

H₂PO₄^-

dihydrogen phosphate

CH₃COO^-

acetate

CrO₄^2-

chromate

Cr₂O_7^2-

dichromate

SO₃^2-

sulfite

SO₄^2-

sulfate

CO₃^2-

carbonate

HPO₄^2-

hydrogen phosphate

C₂O₄^2-

oxalate

AsO₃^3-

arsenite

AsO₄^3-

arsonate

PO₄^3-

phosphate