The correct statement(s) for the packing of identical spheres in two dimensions is/are — Solid State Chemistry Question

💡 Solution & Explanation

In 2D square close packing, each sphere is in contact with 4 spheres, and there is 1 square void per sphere. In 2D hexagonal close packing (HCP), each sphere touches 6 spheres (coordination number = 6), there are 2 triangular voids per sphere, and the packing efficiency is higher (90.7% vs 78.5%).