In an insulator, the forbidden energy gap between the valence band and conduction band is of the order of

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Answer 1

Forbidden energy gap, also known as band gap refers to the energy difference $(e V)$ between the top of valence band and the bottom of the conduction band in materials. Current flowing through the materials is due to the electron transfer from the valence band to the conduction band.
Insulators do not conduct electricity because a large amount of energy is needed for the electrons to cross the forbidden energy gap. Moreover the forbidden energy gap is the widest $(> 5 e V)$ in case of insulators.
Example: Forbidden energy gap in diamond is nearly $5.5 e V$ .

Answer 2

Forbidden energy gap, also known as band gap refers to the energy difference

(e V)

between the top of valence band and the bottom of the conduction band in materials. Current flowing through the materials is due to the electron transfer from the valence band to the conduction band.

Insulators do not conduct electricity because a large amount of energy is needed for the electrons to cross the forbidden energy gap. Moreover the forbidden energy gap is the widest

(> 5 e V)

in case of insulators.

Example: Forbidden energy gap in diamond is nearly

5.5 e V

.

In an insulator, the forbidden energy gap between the valence band and conduction band is of the order of

$1 M e V$

$0.1 M e V$

$1 e V$

$5 e V$

In an insulator, the energy gap between conduction band and valence band is about

In a metal, the separation between conduction band and valence band is of the order

In a semiconductor, the forbidden energy gap between the valence band and the conduction band is of the order is

If the band-gap between valence band and conduction band in a material is $5.0 e V$ , then the material is a/an

In semiconductors, the forbidden energy gap between valence band and conduction band is of the order of :

Revise with Concepts

Metals, Conductors and semiconductors

Electron Energies in Solids

In an insulator, the forbidden energy gap between the valence band and conduction band is of the order of

1MeV

0.1MeV

1eV

5eV

In an insulator, the energy gap between conduction band and valence band is about

In a metal, the separation between conduction band and valence band is of the order

In a semiconductor, the forbidden energy gap between the valence band and the conduction band is of the order is

If the band-gap between valence band and conduction band in a material is 5.0 eV, then the material is a/an

In semiconductors, the forbidden energy gap between valence band and conduction band is of the order of :

Revise with Concepts

Metals, Conductors and semiconductors

Electron Energies in Solids

$1 M e V$

$0.1 M e V$

$1 e V$

$5 e V$

If the band-gap between valence band and conduction band in a material is $5.0 e V$ , then the material is a/an