Which of the following solids is isotropic?
Correct answer: C. Amorphous solids
- A. Ionic solids
- B. Molecular solids
- C. Amorphous solids
- D. Metallic solids
Explanation
The correct option is C. Amorphous solids are isotropic. That is, they exhibit uniform properties in all directions. The thermal and electrical conductivities, coefficient of thermal expansion, and refractive index of an amorphous solid have the same value in whatever direction the properties are measured.
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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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