Polyatomic Ions

OH-

hydroxide

CN-

cyanide

SCN-

thicynate

HCO3-

bicarbonate

HSO3-

bisulfite

HSO4-

bisulfate

C2H3O2-

acetate

NO2-

nitrite

NO3-

nitrate

MnO4-

permanganate

ClO-

hypochlorite

ClO2-

chlorite

ClO3-

chlorate

ClO4-

perchlorate

O2^2-

peroxide

CO3^2-

carbonate

SO3^2-

sulfite

SO4^2-

sulfate

S2O3^2-

thiosulfate

C2O4^2-

oxalate

CrO4^2-

chromate

Cr2O7^2-

dichromate

PO3^3-

phosphite

PO4^3-

phosphate

NH4+

ammonium

Hg2^2+

mercury