The phenomenon in which a compound exists in two or more crystalline forms is called ________________?
Correct answer: B. Polymorphism
- A. Isomorphism
- B. Polymorphism
- C. Anisotropy
- D. Allotropy
Explanation
Polymorphism is the ability of the same compound to exist in two or more different crystal structures. Isomorphism refers to different compounds having similar crystal forms, so students often choose option a by confusing similar names.
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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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