Question

The energy band gap (distance between the conduction band and valence band) in conductor is

• A. $0$
• B. $4\mathrm{angstrom}$
• C. $10\mathrm{angstrom}$
• D. $100\mathrm{angstrom}$

Answer 1

The correct option is A

$0$

The explanation for the correct answer.

In case of option A,

1. The energy band gap is the difference of energy between the valance band and conduction band.
2. In metals, the valance band and conduction band overlap so there is no band gap.
3. Metals are conductors and there is a constant flow of electrons.
4. Thus, in conductors, the gap between the valence band and conduction band is almost zero or overlaps.

Hence option A is the correct answer.