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Assertion (A) : Zinc blende and wurtzite...

Assertion (A) : Zinc blende and wurtzite both have `fcc` arrangement of `S^(2-)` ions.
Reason (R ) : A unit cell of both has four formula units of `ZnS`.

A

If both `(A)` and `(R)` are correct, and `(R)` is the correct explanation of `(A)`

B

If both `(A)` and `(R)` are correct, but `(R)` is not the correct explanation of `(A)`

C

If `(A)` is correct, but `(R)` is incorrect.

D

If both `(A)` and `(R)` are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
D
Correct (A): Zinc blende has fcc arrangement of `S^(2)`-ions while wurzite has hcp arrangement of `S^(2-)` ions.
Correct (R): A unit cell of zinc blende has `4` formula units while that of wurtzite has `6` formula units of `ZnS`.
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