The valence band and conduction band of a sol | vedclass

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(A) In solids,the electrical conductivity depends on the energy gap between the valence band and the conduction band.In metals (conductors),the valenc

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$A$ metal

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(A) In solids,the electrical conductivity depends on the energy gap between the valence band and the conduction band.In metals (conductors),the valence band and the conduction band overlap each other.This overlap allows electrons to move freely from the valence band to the conduction band even at low temperatures,resulting in high electrical conductivity.Therefore,the solid is a metal.

The valence band and conduction band of a solid overlap at low temperature. The solid may be:

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