Question

if pentavalent impurity is added in pure silicon,what type of semiconductor is formed?​

Answer 1

Only four atoms are engaged in bonding. The fifth electron is free and available for conduction. Thus a pentavalent impurity adds a negative charge carrier (electron) and is also known as n-type impurity. A semiconductor with such an impurity is known as n-type semiconductor.

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Answer 2

Answer:

The fifth electron is free and available for conduction. Thus a pentavalent impurity adds a negative charge carrier (electron) and is also known as n-type impurity. A semiconductor with such an impurity is known as n-type semiconductor.