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A binary solid(A^(+) B^(-)) has a zinc b...

A binary solid`(A^(+) B^(-))` has a zinc blende stracture with B ions constituting the lattice and `A^(+)` inos occupying `25%` of the terahedral holes. The formula of the solid is

A

`AB`

B

`A_2B`

C

`AB_2`

D

`AB_4`

Text Solution

Verified by Experts

The correct Answer is:
C
suppose the no of `B^-` ions that constitute in the lattice is 100 The no of T.V = 200, out of these 25% are occupied by `A^+` , therefore the number of `A^+` =50 So, the ratio of `A^(+) : B^(-) = 50 : 100 = 1:2`
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