Answer: Definite melting point.
- A Amorphous arrangement
- B Definite melting point
- C Irregular shape
- D Isotropic properties
Correct answer: B. Definite melting point
Explanation: Crystalline solids have a definite melting point because all bonds throughout the ordered lattice break at the same temperature.
The three cubic unit cells: Simple Cubic has atoms only at corners; Body-Centred adds one atom at the centre; Face-Centred adds one atom at the centre of each of the 6 faces, giving the highest packing efficiency.
Concept context
Explore the ordered world of crystalline solids: unit cells, packing, defects, and how structure determines electrical and magnetic properties.