Question

The mass of a unit cell of $CsCl$ corresponds to:

• A. $8C{s}^{+}$ and $1C{l}^{-}$
• B. $1C{s}^{+}$ and $6C{l}^{-}$
• C. $1C{s}^{+}$ and $8C{l}^{-}$
• D. $1C{s}^{+}$ and $1C{l}^{-}$

Answer 1

Answer: (D)

Unit cell of $CsCl$ has BCC structure. It has $C{l}^{-}$ present at the corners of the cube and $C{s}^{+}$ ions at the cubical void.
Therefore, There is $1C{s}^{+}$ and $1C{l}^{-}$ ion is present in the structure.