Compare NaCl and CsCl with respect to ease of formation and also the strength of the ionic bond.

Ease of formation of ionic bond is more in NaCl and strength of ionic bond is more in CsCl.

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Ease of formation of ionic bond is more in CsCl and strength of ionic bond is more in NaCl.

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Ease of formation of ionic bond is same in both CsCl and NaCl.

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Strength of ionic bond is same in both CsCl and NaCl.

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Solution

The correct option is A Ease of formation of ionic bond is more in CsCl and strength of ionic bond is more in NaCl.
The strength of ionic bonds is directly related to the lattice energy and, therefore, is dependent on the ionic charges and ionic sizes, such that greater charges and smaller ionic sizes lead to stronger bonds.
Therefore the ease of formation of the ionic bond is more in CsCl and strength of the ionic bond is more in NaCl because lattice energy (energy required to dissociate a mole of the solid ionic compound to gaseous ions ) of NaCl is more than that of CsCl.

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