First slide

Crystal lattices and unit cells

Question

First three nearest neighbour distance for body centred cubic lattice are respective.

Moderate

A

$\sqrt{2} a, a, \sqrt{3} a$
B

$\frac{a}{\sqrt{2}}, a, \sqrt{3} a$
C

$\frac{\sqrt{3} a}{2}, a, \sqrt{2} a$
D

$\frac{\sqrt{3} a}{2}, a, \sqrt{3} a$

Solution

$\begin{array}{l} AB = \frac{\sqrt{3} a}{2} (nearest) \\ AC = a (next-nearest) \\ CD = \sqrt{2} a (next-next-nearest) \end{array}$

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