Question

In a hexagonal close packed structure (hcp) of spheres, the fraction of the volume occupied by the sphere is A. In a cubic close packed structure, the fraction is B. The relation for A and B is

• A. A = B
• B. A < B
• C. A > B
• D. A is equal to the fraction in a simple cubic lattice

Answer 1

Answer: (A)

Fraction of the space occupied in $c.c.p.$ and $h.c.p.$ arrangements is the same.