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The number of atoms in a cubic based uni...

The number of atoms in a cubic based unit cell having one atom on each corner and two atoms on each body diagonal is

A

4

B

9

C

12

D

14

Text Solution

Verified by Experts

The correct Answer is:
B
There are four body diagonals. Atoms on the body diagonals are not shared by any other unit cell. Contrebution by atoms on corners
`=8xx(1)/(8)=1` and contribution by atoms on body
diagonal `=2xx4=8`
Total number of atoms `=8+1=9`
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