According to energy band diagram, what makes a substance conductor insulator?

Draw energy band diagram of conductors, semiconductors and insulators.

Explain the formation of energy band diagram in case of conductor and semiconductor.

The energy gaps in the energy band diagrams of a conductor, semiconductor and insulator are E_1 , E_2 , and E_3 . Arrange them in increasing order.

What makes a conductor different from an insulator?

State any one difference between energy band diagram of conductors and that of insulators

Draw the energy-band diagram for an insulator.

Why are some substances are conductors while others are insulators?