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Standard XII
Chemistry
Introduction to Imperfections in Solids
In zinc blend...
Question
In zinc blende, the percentage of tetrahedral voids occupied by
Z
n
2
+
ions is:
A
25
%
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B
50
%
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C
75
%
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D
100
%
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Solution
The correct option is
B
50
%
In zinc blende,
S
2
−
ions have ccp arrangement and
Z
n
2
+
ions occupy half, i.e., alternate tetrahedral voids.
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If AgI crystallize in zinc blende structure with
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AgI crystallizes in the ccp, zinc blende structure. Assuming that
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