AB is an ionic solid. The ionic radii of A^+and B^(-) are respectively r_cand r_a. Lattice energy of AB is proportional to

AB is an ionic solid. The ionic radii of A^+and B^(-) are respectively

1.	AB is an ionic solid. The ionic radii of A^+and B^(-) are respectively r_cand r_a. Lattice energy of AB is proportional to
Answer» `(r_(C))/(r_(a))` `(r_(c)+r_(a))` `(r_(a))/(r_(c))` `(1)/(r_(c)+r_(a))` ANSWER :D