Question

Packing fraction is maximum in which of the following?

• A. Face Centre Cubic
• B. Body Centre Cubic
• C. Simple Cubic Close packing
• D. Hexagonal Close Packing

Answer 1

Answer: (A), (D)

The correct options are
A

Face Centre Cubic

D

Hexagonal Close Packing

We know that packing fraction of FCC and HCP is 74%, that of BCC is 68% and that of Simple Cubic is 52%

So, FCC and HCP have the highest packing fraction.