Polyatomic Ions


NameFormula
ammonium NH4+
nitrite NO2
nitrate NO3
sulfite SO32−
sulfate SO42−
hydrogen sulfate
(aka: bisulfate)
HSO4
thiosulfate S2O32−
cyanide CN
NameFormula
phosphite PO33−
phosphate PO43−
hydrogen phosphate HPO42−
dihydrogen phosphate H2PO4
perchlorate ClO4
chlorate ClO3
chlorite ClO2
hypochlorite ClO
NameFormula
acetate
acetate
CH3COO
C2H3O2
carbonate CO32−
hydrogen carbonate
(aka: bicarbonate)
HCO3
chromate CrO42−
dichromate Cr2O72−
permanganate MnO4
peroxide O22−
thiocyanate SCN