Question

Crystalline materials possess:
(A) Sharp melting point and boiling point,
(B) Anisotropic properties,
(C) Periodic arrangement of atoms,
(D) Isotropic properties

• A. (A), (B), (C) only
• B. (B), (C), (D) only
• C. (A), (C), (D) only
• D. (C), (D) only

Hint:

Crystalline solids have a repeating arrangement of atoms that create a lattice structure, and because of this they have well defined melting points, and properties such as refractive index are different in different dimensions (anisotropy).

Answer 1

The Correct Option is B

Crystalline materials are characterized by a highly ordered and repeating arrangement of atoms in a lattice. This gives rise to:
• Sharp melting point and boiling point: Due to the uniform arrangement and bonding, crystalline materials have a defined melting and boiling point.
• Periodic arrangement of atoms: This defines the crystalline nature, with atoms arranged in a repeating pattern.
Isotropic properties, meaning properties are the same in all directions, are characteristic of amorphous materials.