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VBT Tetrahedral vs Square Planar

Arrangement o...

Question

Arrangement of sulphide ions in zinc blende is

A

sc

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B

hcp

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C

bcc

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D

fcc

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Solution

The correct option is C fcc
Zinc blende (ZnS) crystals are composed of equal number $Z n^{2 +}$ and $S^{2 -}$ , which suggests that it has a tetrahedral arrangement and $S^{2 -}$ ions is this is fcc while $Z n^{2 +}$ ions occupy alternate tetrahedral roids.
Option D is correct.

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