Why metals are good conductors of heat and electric?
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Metals are low resistance and so they can carry charges through the movement of electrons. but not all metals are good conductors. The thermal conductivity of metals is very high because they contain a large number of free electrons which act as carriers of heat and electricity.
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Metals are good conductors of heat and electricity because they are free of electrons.Silver and copper are the two best conductors of heat and electricity. Lead is the poorest conductor of heat. Bismuth, mercury and iron are also poor conductors.
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