Question

The crystalline structure of $NaCl$ is:

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

Answer 1

The correct option is B face centred cubic

Sodium chloride $\left(NaCl\right)$ has face centred cube structure. It contains $4N{a}^{+}$ and $4C{l}^{-}$ ions. Each $N{a}^{+}$ ion is surrounded by $8C{l}^{-}$ ions and each $Cl$ ion is also surrounded by $8N{a}^{+}$ ions.