Which of the following statements is correct for a two-dimensional haxagonal close-packed layer?

Options

A. Each sphere is surrounded by six spehres
B. Each sphere is surrounded by six voids
C. Each sphere has three voids
D. Each void is surrounded b y three spheres

Explanation

(A) Each sphere is surrounded by six sphers.
(B) Each sphere is surrounded by six voids.
(C) Effective number of atoms in a hexagonal unit cell `=((1)/(3)xx6)xx(1xx1)=3`
Effective number of voids in a hexagonal unitocell=6
Hence, each spheres has two voids.
(D) Each void is srurrounded by three spheres.