Structure of a crystal is changed due to ---------
Correct answer: C. Impurity
- A. Cooling
- B. Heating
- C. Impurity
- D. None of these
Explanation
Option C is correct since the presence of impurity due to its different electronic structure produces disturbance in the conduction electron distribution, distortion of the crystal lattice, and polarization of electronic charge. These facts change the various electronic properties of metallic solids significantly.
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About Crystalline Solids
Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.
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