Which of the following are properties of crystalline solid?
A
Isotropic
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B
Sharp melting point
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C
Long range order
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D
Definite regular geometry
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Solution
The correct options are B Sharp melting point C Long range order D Definite regular geometry
Crystalline solids are anisotropic in nature, so option 1 is incorrect.
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 neighbours.
Crystalline solids have a long-range order which means that there is a regular pattern of arrangement of particles which repeats itself periodically over the entire crystal.