Question

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

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

Answer 1

Answer: (D)

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