Why metals become lustre due to presence of free electrons?
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➡Metals are lustrous because of the free electrons they have.
➡ The free electrons can move freely in the metal causing any light incident on them to get reflected back.
➡When photons of light strike the surface of metals, they emit electrons.
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Lustre of metal is due to free flow of electrons. ... In a metal the valence electrons are free to move around relative to the net positively charged atomic cores (nuclei plus bound electrons).
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