Question
Chemistry Question on The solid state
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
A = B
Explanation
Solution
Fraction of the space occupied in c.c.p. and h.c.p. arrangements is the same.