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If the crystallises in zinc blende struc...

If the crystallises in zinc blende structure with `I^-` ions at lattice points. What fraction of tetrahedral voids is occupied by `Ag^+` ions ?

A

0.25

B

0.5

C

1

D

0.75

Text Solution

Verified by Experts

The correct Answer is:
B
In Agl crystals , number of `Ag^+` ions are equal to `I^-` ions . However , the number of tetrahedral voids are twice the number of atoms forming the cubic lattice .
`therefore` Number of tetrahedral voids occupied by `Ag^+` ions = 50%
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