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The edge lengths of the unit cells in t...

The edge lengths of the unit cells in terms of the radius of spheres constituting fcc , bcc and simple cubic unit cell are respectively

A

`2sqrt(2r)'

B

`(4r)/(sqrt3),2sqrt(2r),2r`

C

`2r,2sqrt(2r),(4r)/(sqrt3)`

D

`2r,(4r)/(sqrt3),2sqrt(2r)`

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The correct Answer is:
A
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