It was found that in 30 unit cells of Zn...

It was found that in `30 unit` cells of ZnS, four atoms are of trivalent metal. How many vacant tetrahedral voids are present in `30 unit` cells of ZnS?

A

`2`

B

`62`

C

`122`

D

`126`

Text Solution

Verified by Experts

The correct Answer is:

C

Total vacant `=30xx4+2=122`

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