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Q.
The crystalline structure of $NaCl$ is
J & K CETJ & K CET 2007The Solid State
Solution:
Sodium chloride $(NaCl)$ has face centred cubic structure. It contains $4Na^{+}$ and $4Cl^{-}$ in the unit cell. Each $Na^{+}$ is surrounded by $6Cl^{-}$ ions and vice-versa.