" 1) What is the difference between a conductor and an insulator? "

In terms of band theory , what is the difference between a conductor and an insulator ?

In terms of band theory, what is the difference between a conductor and an insulator?

In terms of band gaps, what is the difference between a conductor and an insulator?

In terms of band theory, what is the difference between a conductor and an insulator

In terms of band theory, what is the difference: between a conductor and an insulator

In terms of band theory, what is the difference (i) between a conductor and an insulator (ii) between a conductor and a semiconductor.