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  4. A unit cell of BaCl2 (fluorite structure) is made up of

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Q. A unit cell of $BaCl_2$ (fluorite structure) is made up of

The Solid State

Solution:

$BaCl _{2}$ has $CaF _{2}$ type structure. In $BaCl _{2}$, The $Ba ^{2+}$ ions form the ccp arrangement, i.e., these ions occupy all the corner positions and the center of each face of the cube. The coordination of the compound is $8: 4$. In a unit of $BaCl _{2}$, there are eight $Ba ^{2+}$ ions and four $Cl ^{-}$ions.