Surface Chemistry & Solid State · JEE Main previous year questions

2014 1 question

1. Q872014 · 6 Apr 2014 · Shift 1

   $\mathrm{CsCl}$ crystallises in body centred cubic lattice. If 'a' is its edge length then which of the following expressions is correct?

   1. A.$r_{C{s}^{+}}+r_{C{l}^{-}}=\frac{\sqrt{3}}{2}a$
   2. B.$r_{C{s}^{+}}+r_{C{l}^{-}}=\frac{3}{2}a$
   3. C.$r_{C{s}^{+}}+r_{C{l}^{-}}=\sqrt{3}a$
   4. D.$r_{C{s}^{+}}+r_{C{l}^{-}}=3a$
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   Answer: A