Ammonium ion
NH4 +
Hydroxide ion
OH-
Cyanide ion
CN-
Acetate ion
C2H3O2 - or CH3COO-
Nitrite/Nitrate
NO2 -/NO3 -
Sulfite/Sulfate
SO3 2-/SO4 2-
Phosphate
PO4 3-
Carbonate
CO3 2-
Hydrogen sulfite ion
HSO3 -
Hydrogen sulfate ion
HSO4 -
Hydrogen phosphite ion
HPO3 2-
Dihydrogen phosphite ion
H2 PO3 -
Hydrogen phosphate ion
HPO4 2-
Dihydrogen phosphate ion
H2PO4 -
Hydrogen carbonate ion, or bicarbonate ion
HCO3 -
Perchlorate ion
ClO4 -
Chlorate ion
ClO3 -
Chlorite ion
ClO2 -
Hypochlorite ion
ClO-
Perbromate ion
BrO4 -
Bromate ion
BrO3 -
Bromite ion
BrO2 -
Hypobromite ion
BrO-
Periodate ion
IO4 -
Iodate ion
IO3 -
Iodite ion
IO2 -
Hypoiodite ion
IO-
Chromate ion
CrO4 2-
Dichromate ion
Cr2O 7 2-
Permanganate ion
MnO4 -