The impurity atoms with which pure silicon would be doped to make a p-type semiconductor are those of.
A
Phosphorus
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B
Boron
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C
Antimony
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D
Aluminium
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Solution
The correct options are B Boron D Aluminium To create p type semiconductor silicon must be doped with trivalent atoms which has three electrons in its valence shell (Boron, Aluminium etc)