Question

What is the coordination number of a simple cubic structure?

(a) 6

(b) 8

(c) 10

(d) 12

This question was posed to me during an internship interview.

The query is from Types of Solids, Crystal Structures and Lattices in section Solid Solutions & Crystallography of Engineering Material & Metallurgy

Answer 1

Right choice is (a) 6

For explanation I would say: Coordination number is defined as the number of nearest neighboring atoms in crystals. The coordination number for the simple cubic structure is 6, whereas it is 8 and 12 for BCC and FCC respectively.