In an insulator, the valence band is
A)half filled.
B)more than half filled.
C)less than half filled.
D)separated from the conduction band by ~5 or more eV.
E)separated from the conduction band by ~1 or less eV.

Question

Quizplus · Accepted Answer

In an insulator, the valence band is fully filled, and there is a large energy gap (typically ~5 eV or more) between the valence band and the conduction band, preventing electrons from easily moving to the conduction band.

In an Insulator, the Valence Band Is