In a semiconductor,the separation between the conduction band and the valence band is of the order of $... \, eV$.

The band diagrams for three different semiconductors are shown in the figure below. Starting from the left to the right,identify the types of semiconductors they represent.

If the lattice constant of this semiconductor is decreased,then which of the following is correct?

The forbidden energy gap for a germanium crystal is approximately ....... $J$.

In good conductors of electricity,the type of bonding that exists is

Choose the correct statement. In conductors,