The energy band gap is maximum in

  • Option 1)

    metals

  • Option 2)

    superconductors

  • Option 3)

    insulators

  • Option 4)

    semiconductors

 

Answers (1)

As we learnt in

Insulator -

When energy gap is more than 3 e.v.

- wherein

1) Electrical conductivity is negligible     

2)\Delta E_{g} > 3\: ev

3) Free electrons density is negligible

 

 

Semiconductor -

Energy gap between valence band and conduction band is less than 3 e.v.

- wherein

1) \Delta E_^{g} 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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