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The band gap between the valence band and conduction band is the measure of ______

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in Physics – Class 12 by (135k points)
The band gap between the valence band and conduction band is the measure of ______

(a) The conductivity of the material

(b) The resistivity of the material

(c) Charge density

(d) Ease of ionization

I had been asked this question in my homework.

My question is based upon Conductors and Insulators topic in section Charges and Fields of Physics – Class 12

1 Answer

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Best answer
Right choice is (a) The conductivity of the material

Easiest explanation: The more the band gap between the valence band and conduction band, the worse is the conductivity of the material. For conductors, there are overlapping bands. So, conductors can carry electricity. But there is a huge energy gap in the case of insulators. So, they don’t carry electricity at all.

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