Definition:
Crystal is a solid in which the constituent atoms, molecules, or ions are packed in a regularly ordered, repeating pattern extending in all three spatial dimensions.
-In crystalline solids are compounds in which the molecules are packed (bonded) in a defined, specific and repeating order.
- A repetitive arrangement in solid makes the three dimensional structure which is known as crystal lattice.
Characteristic of Crystalline solid:
- Any crystal is characterized by its internal structure and habit. Habit is the description of the outer appearance of a crystal whereas the internal structure is the molecular arrangement within the solid.
- Crystalline solid have sharp melting point
- Crystalline solids are the most stable solids compared to other solids.
- Crystalline solid show the anisotropic property.
-Crystalline solid is hard and brittle.
- Crystalline solid have heat of evaporation is very high.
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