Pick out the correct statement for CsCl crystal : (A) Co-ordination number for \( \mathrm{Cs}^{+...

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Pick out the correct statement for CsCl crystal :
(A) Co-ordination number for \( \mathrm{Cs}^{+} \)and \( \mathrm{Cl}^{-} \)is 8
(B) \( { }^{\mathrm{Cs}^{+}} / r_{\mathrm{Cl}^{-}}=0.732 \)
(C) The structure changes to \( \mathrm{NaCl} \) structure at \( 760 \mathrm{~K} \)
(D) \( \mathrm{Cl}^{-} \)ions are present at cubic sites
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