Assertion :The various energy bands in a solid may or may not overlap depending on the structure of the solid. Reason: If they do not overlap then the intervals between them represent energies which the electrons in the solid cannot have.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The energy bands in the solid overlap depending on the structure of solid. For example, in case of conductors, valence and conduction band overlap whereas, insulators, there is a gap between valence and conduction band. The gap corresponds that the electrons do not have energies corresponding to this gap.

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