If a is the length of the side of a cube the distance between the body

If a is the length of the side of a cube the distance between the body centered atom and one corner atom in the cube will be

(a) 2/√3a
(b) 4/√3a
(c) √3a/4
(d) √3a/2

√3a/2

For bcc lattice body diagonal =a√3
The distance between the body centered atom and one corner atom in cube will be
=√3a /2.

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