Question

Incorrect characteristic of crystalline solids is:
[0.77 Mark]

• A. Definite characteristic geometrical shape
• B. Melt at a sharp and characteristic temperature
• C. Long range order
• D. Isotropic in nature

Answer 1

The correct option is D Isotropic in nature

Crystalline solids are anisotropic in nature, that is, some of their physical properties like electrical resistance or refractive index show different values when measured along different directions in the same crystals. This arises from different arrangement of particles in different directions. Since the arrangement of particles is different along different directions, the value of same physical property is found to be different along each direction.