Metals (optical property): The luster (shiny appearance) of a metal is primarily due to what? Focus on fundamental electronic structure of metals. Choose the correct cause.
IIT JEE
Chemistry
Difficulty: Easy
Choose an option
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AIts high density
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BIts high polishing
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CIts chemical inertness
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DPresence of free electrons
Answer
Correct Answer: Presence of free electrons
Explanation
Concept/ApproachMetals have a sea of delocalized (free) electrons that reflect incident light efficiently, producing characteristic metallic luster.
Final AnswerPresence of free electrons