Question

What is band theory explaining conductivity?Write the answers of the given question in short.

Answer 1

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In terms of the band theory of solids, metals are unique as good conductors of electricity.
This can be seen to be a result of their valence electrons being essentially free.
In the band theory, this is depicted as an overlap of the valence band and the conduction band so that at least a fraction of the valence electrons can move through the material.

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