Question

2
.
What is the co-ordination number of a molecule in 2D square close packed layer and 3D
Hexagonal close packed layer?​

Answer 1

Explanation:

COORDINATION NUMBER- The number of spheres which are touching a given sphere is called the coordination number. In square close-packed layer, a molecule is in contact with four of its neighbours. Therefore, the two-dimensional coordination number of a molecule in square close-packed layer is 4.