Question

Which of the following is most appropriate to crystalline solid?

• A. Give diffraction bands
• B. Characteristics geometrical shapes
• C. Sharp melting point
• D. All of these

Answer 1

The Correct Option is D

Crystalline solids exhibit several distinct characteristics that differentiate them from amorphous solids. Let's examine the properties mentioned in the options:

1. Give diffraction bands: Crystalline solids have a well-ordered structure that results in a regular pattern of diffraction. When X-rays are passed through a crystalline solid, they are scattered in specific directions, creating a diffraction pattern or bands. This property is a key characteristic of crystalline solids and is used in techniques like X-ray crystallography to determine their structures.
2. Characteristic geometrical shapes: Due to their ordered internal structure, crystalline solids tend to form characteristic geometrical shapes with flat faces and specific angles. This results from the regular arrangement of atoms, ions, or molecules within the crystal lattice.
3. Sharp melting point: Crystalline solids have a specific and sharp melting point. This occurs because the energy required to break the uniform bonds in the crystal lattice is consistent, leading to a well-defined phase transition from solid to liquid at a particular temperature.

Considering all these aspects, it is clear that all of the mentioned properties are accurate descriptions of crystalline solids.

Conclusion: Given that each of the characteristics accurately applies to crystalline solids, the correct answer is All of these.