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Metals and Non-metals
As electrons in metals are loosely held, they are mobile. Thus the electrons present in the metals absorb energy and get excited to higher energy level. When these electrons come back to original energy level, they emit electromagnetic radiations due to which metals have shiny appearance and thus possess lustre.
As electrons in metals are loosely held, they are mobile. thus the electrons presen
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Define the terms: (i) Thermal conductivity (ii) Electrical conductivity.
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