polyatomic ions

Formula Name Formula Name

NH4+ Ammonium MnO4− permanganate

C2H3O2− Acetate NO2− Nitrite

CN− Cyanide NO3− Nitrate

SCN− Thiocyanate OH− Hydroxide

HCO3− Bicarbonate O22− Peroxide

CO32− Carbonate H2PO4− Dihydrogen phosphate

C2O42− Oxalate HPO42− Hydrogen phosphate

ClO− Hypochlorite PO43− Phosphate

ClO2− Chlorite HSO3− Bisulfite

ClO3− Chlorate SO32− Sulfite

ClO4− Perchlorate HSO4− Bisulfate

CrO42− Chromate SO42− Sulfate

Cr2O72− Dichromate S2O32− thiosulfate