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

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

A

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

B

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

C

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

D

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

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