In an insulator, the band gap between the valence band and the conduction band is
A) zero or very small.
B) small but non-zero.
C) moderately large, but not huge.
D) extremely large.

Question

Quizplus · Accepted Answer

In an insulator, the band gap between the valence band and the conduction band is extremely large, which prevents electrons from easily moving to the conduction band and thus inhibits electrical conductivity.

In an Insulator, the Band Gap Between the Valence Band