Answer: non-directional in properties.
- A sharp-melting like crystals
- B long-range ordered
- C non-directional in properties
- D fixed in geometrical shape
Correct answer: C. non-directional in properties
Explanation: Due to their irregular arrangement, amorphous solids show the same value of any physical property in every direction, i.e. their properties are non-directional (isotropic).
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.