Question

Which primitive unit cell has unequal edge lengths (a ≠ b ≠ c) and all axial angles different from 90°?

Options

• Triclinic

• Hexagonal 

• Monoclinic

• Tetragonal

Answer 1

Triclinic

Explanation:

For triclinic crystal

a ≠ b ≠ c Edge lengths

α ≠ β ≠ γ Axial angle