Question

In CsCl type structure, the coordination number of $C{s}^{+}$ and $C{l}^{-}$ respectively are:

• A. $6,6$
• B. $6,8$
• C. $8,8$
• D. $8,6$

Answer 1

Answer: (C)

$8,8$

In $CsCl$, cesium ions forms the simple cubic arrangement and chloride ions occupy the interstitial sites such that each cesium ion is surrounded by 8 chloride ion and each chloride ion is surrounded by 8 cesium ion. So, the coordination is 8:8.

Hence option C is correct.