Explain conductors, semiconductors, and insulators on the basis of band theory and draw energy diagram.
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Conductors : the substances with conductivities ranging between 10 power 4 to 10 power 7 is called conductors
the gap between filled valence band and conduction band is very small
semiconductors : the substanes with conductivities ranging between 10 power-6 to 10 power 4 is called semiconductors
the gap between filled valence band and conduction band is small
Insulators: the substances with conductivities ranging between 10 power -20 to 10 power -10 is called insulators
the gap between filled valence band and conduction band is long
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