Question

If the bandgap between valence band and conduction band in a material is $0eV$, then the material is

• A. Semiconductor
• B. Good conductor
• C. Superconductor
• D. Insulator

Answer 1

The correct option is B Good conductor

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.