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Question: In which of the following crystals alternate tetrahedral voids are occupied?...

In which of the following crystals alternate tetrahedral voids are occupied?

A

NaCl

B

ZnS

C

CaF2

D

Na2O

Answer

ZnS

Explanation

Solution

In ZnS structure, sulphide ions occupy all FCC lattice points while Zn2+ ions are present in alternate tetrahedral voids.