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Solid State — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistrySolid State2 Marks
Question
Why does a crystalline solid has a sharp melting point ?
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Answer

  1. Crystalline solid is a homogeneous solid and it has long range order of regular pattern of arrangement which repeats periodically over entire crystal.
  2. The interatomic or intermolecular forces are identical, hence the thermal energy required to break the regular structure by overcoming the intermolecular forces is uniform throughout.
  3. Hence the heat and temperature needed to melt the solid are same, and therefore solids have sharp melting points.

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