Q. If a small amount of antimony is added to germanium crystal
A) Its resistance is increased
B) It becomes a p-type semiconductor
C) The antimony becomes an acceptor atom
D) There will be more free electrons than holes in the semiconductor
Explanation
[Solution from source] Antimony is pentavalent; in germanium it donates an extra electron, making an n-type semiconductor with free electrons as majority carriers. It is a donor, not an acceptor, and doping lowers the resistance rather than increasing it. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.