ammonium
NH4+
nitrite
NO2-
nitrate
NO3-
sulfite
SO3^2-
sulfate
SO4^2-
hydrogen sulfate
HSO4-
hydroxide
OH-
cyanide
Cn-
phosphate
PO4^3-
hydrogen phosphate
HPO4^2-
dihydrogen phosphate
H2PO4-
carbonate
CO3^2-
hydrogen carbonate
HCO3-
hypochlorite
CLO-
chlorite
CLO2-
chlorate
CLO3-
perchlorate
CLO4-
acetate
C2H3O2
dichromate
Cr2O7^2-
chromate
CrO4^2-
peroxide
O2^2-