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An element crystallises in a 'bcc' latti...

An element crystallises in a 'bcc' lattice Nearest neighbours and next nearest neighbours of the elements are respectivel.

A

8,8

B

8,6

C

6,8

D

6,6

Text Solution

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The correct Answer is:
B
In a b.c.c. structure C.N. (Every atoms touches 8 other atoms, 4 in a layer below it and 4 in a layer above it )
However, there are 6 other atoms (in six adjacent cubic sites) which are only slightly away from it. Thus , these 6 atoms are the next nearest neighbours.
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