Question

The calculation of packing fraction is useful to get an idea of which of the following?

• A. Volume of the unit cell.
• B. Distance between spheres.
• C. How tightly the spheres are arranged.
• D. Density of the spheres.

Answer 1

The correct option is C

How tightly the spheres are arranged.

Any calculation has a reason.

Here, when we calculate packing fraction of a given arrangement, what we really want to know is how tightly the spheres are arranged in the crystal. Higher the packing fraction of a unit cell, more tightly the spheres are arranged and lesser is the vacant space.