Question

The correct order of the packing efficiency in different types of the unit cell is:

• A. fcc < bcc <simple cubic
• B. fcc > bcc >simple cubic
• C. fcc < bcc >simple cubic
• D. bcc < fcc >simple cubic

Answer 1

The correct option is B fcc > bcc >simple cubic

Packing efficiencies of different cells are shown in the above table.

Hence, correct order is fcc (74%) > bcc(68%) > simple cubic (52%).

Hence, the correct option is $\text{B}$