Aquation of Sodium Ion and Chloride Ion
NaCl(
s
) --> Na
+
(
aq
) + Cl
-
(
aq
)
Na
+
(
aq
)
Cl
-
(
aq
)
Note that the larger size of the (pink) Cl
-
ion (compared to the (green) Na
+
ion) permits a greater number of water molecules of aquation around the Cl
-
ion.