Question

The crystalline structure of $NaCl$ is

• A. hexagonal close packing
• B. face centred cubic
• C. square planar
• D. body centred cubic

Answer 1

Answer: (B)

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.