Answer: n-type.
- A n-type
- B p-type
- C an insulator
- D a superconductor
Correct answer: A. n-type
Explanation: Pentavalent donors add free electrons, producing an n-type semiconductor.
Conductors have overlapping bands, semiconductors have a small energy gap that can be bridged by heat or doping, and insulators have a large gap that blocks conduction.
Concept context
Band theory, p-n junction, diodes, transistors, logic gates, and integrated circuits.