Question

The crystal system of a compound with unit cell dimensions a = 0.387, b = 0.387 and c = 0.504 nm and α = β =  90° and  γ = 120° is

(a) cubic

(b) hexagonal

(c) orlhorhombic

(d) rhombohedral. 

Answer 1

Correct option (b) hexagonal

Explanation:

a = b ± c, α = β = 90° γ = 120°

The given conditions represent hexagonal system.