Doping of As with Si is called _

n-type semi-conductor

p-type semi-conductor

Intrinsic semi-conductor

None of the above

As is a member of group V and has 5 electrons in its outermost shell.
When Si is doped with group V elements such as As then, Si forms four bonds with As and one extra electron is left free for conduction.
Since the conduction is due to the presence of free electrons, therefore, it is known as n-type semiconductor.

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