The valence band and the conduction band of a substance overlap at ordinary temperatures. The substance may be_____
A. ap-type semiconductor
B. a conductor
C. an insulator
D. an n-type semiconductor
Answer:B
The valence band and the conduction band of a substance overlap at ordinary temperatures. The substance may be_____
A. ap-type semiconductor B. a conductor C. an insulator D. an n-type semiconductor