Question

The sharp melting point of crystalline solids is due to______.

• A. a regular arrangement of constituent particles observed over a short distance in crystal lattice.
• B. a regular arrangement of constituent particles observed over a long distance in crystal lattice.
• C. same arrangement of constituent particles in different direction
• D. different arrangement of constituent particles in different directions

Answer 1

Answer: (B)

a regular arrangement of constituent particles observed over a long distance in crystal lattice.

Crystals tend to have relatively sharp, well-defined melting points because all the component atoms, molecules, or ions are the same distance from the same number and type of neighbors; that is, the regularity of the crystalline lattice creates local environments that are the same.

So, option B is correct answer.