Ammonium
NH4
Nitrate
NO3
Suphate
SO4
Hydroxide
OH
Phosphate
PO4
Chlorate
CIO3
Acetate
CH3COO
Carbonate
CO3
Dichromate
Cr2O7
Permanganate
MnO4
Valency of Ammonium
+1
Valency of nitrate
-1
Valency of sulphate
-2
Valency of hydroxide
-1
Valency of phosphate
-3
Valency of chlorate
-1
Valency of acetate
-1
Valency of Carbonate
-2
Valency of dichromate
-2
Valency of permanganate
-1