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A5 is an ionic solid. The ionic radii of...

A5 is an ionic solid. The ionic radii of A+and B are respectively r andr. Lattice energy of AB is proportional to

A

`r_(c)/r_(a)`

B

`(r_(fl)+r_(0))`

C

`r_(n)/r_(c)`

D

`1/(r_(c)+r_(a))`

Text Solution

Verified by Experts

The correct Answer is:
d
In case of ionic solid, lattice becomes stronger when the inter ionic distance decreases. U is proportional to `1/r` i.e., `U propto 1/(r_(c)+1/r_(a))`
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