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Q.
In the sphalerite (ZnS) structure, $S^{2-}$ ions form a face-centred cubic lattice. Then from the Comers, $Zn^{2+}$ ions are present on the body diagonals at
The Solid State
Solution:
$Zn^{2+}$ ions are present at l/4th of the distance from the comer along each body diagonal (one on each body diagonal).