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25. What are energy bands in solids? How are these formed ? How do we classify solidsas conductors and semiconductors on the basis of energy band diagram ?4

Answer»

Electrons in the valencebandhave lowerenergythan the electrons in conductionband. The electrons present in the valencebandare loosely boundtothe nucleus of atom. Theenergy bandwhich isformedby grouping the range ofenergylevels of the free electrons is called as conductionband.



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