question_answer

CsCl crystallises in body centred cubic lattice. If ?a? is its edge length then which of thefollowing expressions is correct ?   JEE Main  Solved  Paper-2014

A) \[{{r}_{Cs}}+{{r}_{Cl-}}=\frac{\sqrt{3}}{2}a\]       

B) \[{{r}_{Cs}}{{+}_{C{{l}^{-}}}}=\sqrt{3}a\]

C) \[{{r}_{Cs}}_{+}{{+}_{C{{l}^{-}}}}=3a\]   

D) \[{{r}_{Cs}}_{+}+{{r}_{C{{l}^{-}}}}=\frac{3a}{2}\]