# Lattice energy of an ionic compound depends upon Option 1) charge on the ion only Option 2) size of the ion only Option 3) packing of the ion only Option 4) charge and size of the ion

S Sabhrant Ambastha

As we learnt in

The ionic radius is the distance between the nucleus of an ion and the point where the nucleus exerts its influence on the electron cloud.

$r_{cation}+r_{anoin}=r_{ionic \:\:radii}$

Energy released while forming a lattice is directly proportional to the charges of the ions and inversely proportional to the distance between them.

Option 1)

charge on the ion only

This option is incorrect.

Option 2)

size of the ion only

This option is incorrect.

Option 3)

packing of the ion only

This option is incorrect.

Option 4)

charge and size of the ion

This option is correct.

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