Band gap in insulator is of the order

The forbidden energy gap in an insulator is of the order of

Energy band gap E_(g) in an insulator is of the order of

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

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

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