When an element occurs in different physical forms it is called _.
Correct answer: D. Allotropy
- A. Anisotropy
- B. Isomorphism
- C. Polymorphism
- D. Allotropy
Explanation
Allotropy refers to the ability of an element to exist in different physical forms, often with different crystal structures or molecular arrangements. This can result in different properties, such as density, hardness, or color. Examples of allotropes include:- Carbon: diamond, graphite, and fullerenes- Sulfur: orthorhombic, monoclinic, and rhombic forms- Phosphorus: white, black, and red forms
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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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