Acetate
(C2H3O2)-
Nitrate
(NO3)-
Nitrite
(NO2)-
Permanganate
(MnO4)-
Hydroxide
(HO)-
Cyanide
(CN)-
Sulfate
(SO4)2-
Sulfite
(SO3)2-
Carbonate
(CO3)2-
Chromate
(CrO4)2-
Dichromate
(Cr2O7)2-
Phosphate
(PO4)3-
Phosphite
(PO3)3-
Chlorite
(ClO2)-
Peroxide
(O2)2-
Ammonium
(NH4)+