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Doping with a pentavalent atom gives which type?

AAn intrinsic
BAn insulator
CAn n-type
DA p-type
Answer & Solution
Correct answer: C. An n-type
1. A pentavalent atom has one electron more than silicon needs. 2. That spare electron is free to conduct. 3. Negative carriers dominate, giving n-type material. 4. So the answer is an n-type. _Source: syllabus Physics, Ch 14 'Semiconductor Electronics'_
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