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The volume of atom present in a face-cen...

The volume of atom present in a face-centred cubic unit cell of a metal (`r` is atomic radius ) is

A

`20/3 pir^3`

B

`24/3pir^3`

C

`12/3pir^3`

D

`16/3pir^3`

Text Solution

Verified by Experts

The correct Answer is:
D
Volume of an atom `=4/3 pir^3`
In fcc, number of atom per unit cell =4
`therefore " Volume of total atoms" =4xx4/3pir^3=16/3pir^3`
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