Common Polyatomic Ions
ClO4ClO3ClO2-
1- charge
perchlorate
chlorate
chlorite
ClONO3NO2IO3-
CO32SO42SO32-
2- charge
carbonate
sulfate
sulfite
3- Charge
PO43- phosphate
PO33- phosphite
AsO43- arsenate
hypochlorite
nitrate
nitrite
iodate
CrO42Cr2O72C2O42SiO32-
chromate
dichromate
oxalate
silicate
BO33-
BrO3-
bromate
HPO42- hydrogen phosphate
MnO4OH-
permanganate
hydroxide
O22-
CNC2H3O2-
cyanide
acetate
CH3COO-
acetate
H2PO4-
dihydrogen phosphate
HSO3HSO4-
hydrogen sulfite (bisulfite)
hydrogen sulfate (bisulfate)
HCO3-
hydrogen carbonate (bicarbonate)
SCN-
thiocyanate
borate
peroxide
1+ Charge
NH4+ ammonium
H3O+ hydronium
(reminder: NH3 =
ammonia)