1. Name one ion for each of the valencies +1, +2 and +3. 2. Name one ion for each of the valencies-1, -2 and -3.
1. Name one ion for each of the valencies +1, +2 and +3.
2. Name one ion for each of the valencies-1, -2 and -3.
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1. +1 = Sodium Na+
+2 = Calcium Ca+2
+3 = Aluminium Al+3
2. -1 = Chlorine Cl-
-2 = Oxygen O-2
-3 = Nitrogen N-3
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