ammonium
NH4+
hydronium
H3O+
peroxide
O22−
hydroxide
OH−
acetate
C2H3O2−
cyanide
CN−
carbonate
CO32−
bicarbonate
HCO3−
nitrate
NO3−
nitrite
NO2−
sulfate
SO42−
sulfate
SO42−
hydrogen sulfate
HSO4−
sulfite
SO32−
hydrogen sulfite
HSO3−
phosphate
PO43−
hydrogen phosphate
HPO42−
dihydrogen phosphate
H2PO4−
perchlorate
ClO4−
chlorate
ClO3−
chlorite
ClO2−
hypochlorite
ClO−
chromate
CrO42−
dichromate
Cr2O72−