ammonium

NH4 +

nitrite

NO2 -

nitrate

NO3 -

sulfite

SO3 2-

sulfate

SO4 2-

hydrogen sulfate

(bisulfate)

HSO4 -

hydroxide

OH -

cyanide

CN -

phosphate

PO4 3-

hydrogen phosphate

HPO4 2-

dihydrogen phosphate

H2PO4 -

carbonate

CO3 2-

hydrogen carbonate

(bicarbonate)

HCO3 -

hypochlorite

ClO -

chlorite

ClO2 -

chlorate

ClO3 -

perchlorate

ClO4 -

acetate

C2H3O2 -

permanganate

MnO4 -

dichromate

Cr2O7 2-

chromate

CrO4 2-

peroxide

O2 2-