The energy band gap is maximum in
metals
superconductors
insulators
semiconductors
As we learnt in
Insulator -
When energy gap is more than 3 e.v.
- wherein
1) Electrical conductivity is negligible
2)
3) Free electrons density is negligible
Semiconductor -
Energy gap between valence band and conduction band is less than 3 e.v.
- wherein
1) lies between conductor & insulator
2) Both electron and holes are responsible for conductivity .
3) At 0 K behave like an insulator (Si,Ge)
Energy band gap is maximum in insulator and minimum (zero) in conductor.
Correct option is 3.
Option 1)
metals
This is an incorrect option.
Option 2)
superconductors
This is an incorrect option.
Option 3)
insulators
This is the correct option.
Option 4)
semiconductors
This is an incorrect option.
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