Question

A pentavalent dobing atom is called _ atom​

Answer 1

Answer:

Since pentavalent atom i.e dopant having valency 5 i.e, an element whose atom has 5 valence electrons is called pentavalent impurity. ... These impurities are known as Donor impurities i.e. because they donate extra free electrons to the intrinsic semiconductor. It is generally for the n type semiconductor.

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Answer 2

Answer:

Since pentavalent atom i.e dopant having valency 5 i.e, an element whose atom has 5 valence electrons is called pentavalent impurity. For example. As Pb, phosphorous, etc. These impurities are known as Donor impurities i.e. because they donate extra free electrons to the intrinsic semiconductor .