Question:
Choose the correct statement.
In case of insulators,
Choose the correct statement.
In case of insulators,
Show Hint
Large energy gap between valence and conduction bands implies insulating behaviour.
Updated On: Feb 11, 2026
- conduction band is partially filled and valence band is partially empty
- conduction band and valence band overlap each other
- conduction band is empty
- there is no gap between conduction and valence band
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The Correct Option is C
Solution and Explanation
Step 1: Band structure of solids.
In solids, electrical conductivity depends on the distribution of electrons in the valence band and conduction band.
Step 2: Behaviour of insulators.
In insulators, the valence band is completely filled and the conduction band is completely empty due to a large energy gap between them.
Step 3: Elimination of incorrect options.
Options (A) and (B) correspond to conductors, while option (D) is incorrect because insulators have a large forbidden energy gap.
Step 4: Conclusion.
Hence, in insulators, the conduction band is empty.
In solids, electrical conductivity depends on the distribution of electrons in the valence band and conduction band.
Step 2: Behaviour of insulators.
In insulators, the valence band is completely filled and the conduction band is completely empty due to a large energy gap between them.
Step 3: Elimination of incorrect options.
Options (A) and (B) correspond to conductors, while option (D) is incorrect because insulators have a large forbidden energy gap.
Step 4: Conclusion.
Hence, in insulators, the conduction band is empty.
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