Q. Antimony is a __ type doping material

A
Trivalent
B
Semiconductor
C
Acceptor
D
Pentavalent
Solution:

Antimony is a pentavalent type doping material. Pentavalent elements are those elements which have five electrons in their outer shell. To make the n-type semiconductor, pentavalent impurities like phosphorus or arsenic are added. Four of the impurities’ electrons form bonds with the surrounding silicon atoms. This leaves one electron free.

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