Why does a metal loses its lustre?
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When metals exposed to air and moisture for longer times then their outer surface gets oxidised and forms oxide layer ion the surface of metals. Because of this oxide layer on the surface metal appears with dull or less shiny.
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Explanation:
When metals exposed to air and moisture for longer times then their outer surface gets oxidised and forms oxide layer ion the surface of metals. Because of this oxide layer on the surface metal appears with dull or less shiny.
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