A) hexagonal close packing
B) face centred cubic
C) square planar
D) body centred cubic
Correct Answer: B
Solution :
Sodium chloride\[(NaCl)\]has face centred cubic structure. It contains\[4N{{a}^{+}}\]and\[4C{{l}^{-}}\]in the unit cell. Each\[N{{a}^{+}}\]is surrounded by\[6C{{l}^{-}}\]ions and vice-versa.
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