In hexagonal close packing of spherer in three dimensions.

The percentage of the available space occupied in a hexagonal close packing of spheres in three dimensions is

In hexagonal close packing of shpere in three dimesions, which of the following statements is correct.

In hexagonal close packing of shpere in three dimesions, which of the following statements is correct.

What are the coordination numbers of each particles in square and hexagonal close packing of particles in two dimensions?

Select the correct statement(s) related to hexagonal close packing of identical spheres in three dimensions :