Question

Which of the following shows maximum packing efficiency?

• A. Hexagonal close-packed lattice
• B. Body-centered cubic
• C. Simple cubic

Answer 1

The correct option is A

Hexagonal close-packed lattice

Explanation for the correct options:

(A) Hexagonal close-packed lattice

• Hexagonal close-packed lattice has a packing efficiency of $74\%$.
• Hexagonal close-packed lattice has the highest packing efficiency.

Explanation for the incorrect options:

(B)Body-centered cubic

• Body-centered cubic lattice has a packing efficiency of $68\%$.

(C)Simple cubic

• A simple cubic lattice has a packing efficiency of $52.4\%$.

Hence, option (A) is correct., Hexagonal close-packed lattice has the highest packing efficiency.