Question

In a good conductor, what is the energy gap between the conduction band and the valence band.?

Answer 1

In good conductors, the valance band and the conduction band overlap each other resulting in a zero band gap energy. Whereas, bandgap in insulator is nearly 5 eV and that in semiconductors is nearly 1.1 eV.

Hence the given material is a good conductor.

Answer 2

In a good conductor ,there is no energy gap between conduction band and valance band .

● In good conductors like metal ,conduction band and valance band overlaps each other .

● Due to overlapping of both the bands the movement of electron is very easy and fluent from conduction band to valence band.

● due to better movement of electron it's conductivity is good.

● on the other hand there is energy gap in insulators ,so no conduction of electrons here.