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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 ® are correct , and ® is correct explanartion of (A

B

if both (A) and ® are correct , but ® is nmot the correct explanation of

C

if (A) is correct , but ® is incorrect.

D

if both (A) and ® are icorrect .

Text Solution

Verified by Experts

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