Mercury (I)
Hg2
+2
Ammonium
NH4
+1
Nitrite
NO2
-1
Nitrate
NO3
-1
Sulfite
SO3
-2
Sulfate
SO4
-2
Hydrogen sulfate (bisulfate) HSO4
-1
Hydroxide
OH
-1
Cyanide
CN
-1
Phosphate
PO4
-3
Hydrogen phosphate
HPO4
-2
Dihydrogen phosphate
H2PO4
-1
Thiocyanate
NCS or SCN
-1
Carbonate
CO3
-2
Hydrogen carbonate (bicarbonate) HCO3
-1
Hypochlorite
ClO or OCL
-1
Chlorite
ClO2
-1
Chlorate
ClO3
-1
Perchlorate
ClO4
-1
Acetate
C2H3O2
-1
Permangante
MnO4
-1
Dichromate
Cr2O7
-2
Chromate
CrO4
-2
Peroxide
O2
-2