alleryArsenic, antimony and phosphorus are dopants that are:
ATetravalent
BUnivalent
CPentavalent
DTrivalent
Answer & Solution
Correct answer: C. Pentavalent
1. These atoms carry five valence electrons each.
2. That is one more than the silicon they replace.
3. So they are pentavalent dopants.
_Source: syllabus Physics Part II, Chapter 14, Semiconductor Electronics._
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