Metallic lustre is due to

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(C) The lustre of metals is due to the presence of free or mobile electrons in the metallic lattice.When light strikes the surface of the metal,these

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reflection of light by mobile electrons

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(C) The lustre of metals is due to the presence of free or mobile electrons in the metallic lattice.When light strikes the surface of the metal,these mobile electrons absorb the energy of the incident light and then re-emit it.This reflection of light by the mobile electrons gives the metal its characteristic shiny appearance or lustre.

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