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 over a short distance in crytal lattice
• D. The distance between the constituent particles is very small

Answer 1

The correct option is B A regular arrangement of constituent particles observed over a long distance in crystal lattice

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