Isomorphic substances have _______________?
Correct answer: D. Different physical and chemical properties
- A. Same physical and chemical properties
- B. Same physical and different chemical properties
- C. Different physical and same chemical properties
- D. Different physical and chemical properties
Explanation
Isomorphic substances have different chemical compositions but crystallize in the same or similar crystal form, so their physical and chemical properties are not identical. Students may choose option a by interpreting the similar crystal shape as meaning that the substances must have the same properties.
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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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