POLYATOMIC IONS

NH4(+)

ammonium

C2H3O2(-)

acetate

CN(-)

cyanide

CO3(2-)

carbonate

ClO3(-)

chlorate

ClO2(-)

chlorite

CrO4(2-)

chromate

Cr2O7(2-)

dichromate

HCO3(-)

hydrogen carbonate/bicarbonate

OH(-)

hydroxide

ClO(-)

hypochlorite

NO3(-)

nitrate

NO2(-)

nitrite

ClO4(-)

perchlorate

MnO4(-)

permanganate

PO4(3-)

phosphate

PO3(3-)

phosphite

SO4(2-)

sulfate

SO3(2-)

sulfite

H3O(+)

hydronium

Hg2(2+)

mercury(I)

N3(-)

azide

H2PO4(-)

dihydrogen phosphate

HPO4(2-)

hydrogen phosphate

HSO4(-)

hydrogen sulfate/bisulfate

C2O4(2-)

oxalate

O2(2-)

peroxide

SCN(-)

thiocyanate