Question

In BCC, the distance between two nearest atoms will be 

• A. \(\sqrt 3\)a
• B. \(\frac{\sqrt 3}{2}\)a
• C. \(\frac{\sqrt 3}{4}\)a
• D. \(\frac{a}{2}\)

Answer 1

The Correct Option is B

The correct option is (B): \(\frac{\sqrt 3}{2}\)a
In BCC, there will be atoms at the body centre and at corners. So the distance between two nearest atoms is nothing but distance between point A and O 
AO=\(\frac{AF}{2}\)= \(\frac{\sqrt 3}{2}\)a.