Electronic Devices Question 176

Question: Sodium has body centred packing. If the distance between two nearest atoms is 3.7AA , then its lattice parameter is

[Pb. PET 2002]

Options:

A) 4.8AA

B) 4.3AA

C) 3.9AA

D) 23.3AA

Show Answer

Answer:

Correct Answer: B

Solution:

For bcc packing, distance between two nearest atoms d=2r=2(3a4)

Therefore Lattice constant a=2d3=2×3.73=4.3AA



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