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Question

Metallic lustre is due to:

A
high density of metals
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B
high polish on the surface of metals
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C
reflection of light by mobile electrons
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D
chemical inertness of metals
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Solution

The correct option is C reflection of light by mobile electrons
Metals are lustrous because of the mobile electrons present in them. The light falling on these electrons is reflected. Thus, the metal surface appears shiny or lustrous.

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