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The number of carbon atoms per unit cell...

The number of carbon atoms per unit cell of diamond unit cell is

A

6

B

1

C

4

D

8

Text Solution

Verified by Experts

The correct Answer is:
D
Carbon has structure similar to ZnS (Zinc blende). Carbon forming fcc or ccp and also occupying half tetrahedral sites.
Total no. of carbon atoms = `8 xx 1/8 ("corners") + 6 xx 1/2`
(faces) + 4(tetrahedral sites) = 8.
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