The more water molecules the more intermolecular forces, Ask an Expert

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When ions dissolve in water, water molecules form intermolecular forces that release energy. The more water molecules, the more intermolecular forces formed, the more energy released when ions dissolve in water. How does the periodic trend of cation radius for the alkali chloride solids compare to the number of water molecules that can form attractions to an alkali cation?

Ionic Solid	Class AvgDH Sign -/0/+	Lattice Energy (kJ/mol)	Cation Radius (pm)
LiCl	+	853	60
NaCl	0	787	95
KCl	-	715	133

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Category:- Chemistry
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