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Question

A pentavalent impurity is called


A

Acceptor impurity

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B

Ionic impurity

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C

Donor impurity

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D

Non ionic impurity

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Solution

The correct option is C

Donor impurity


The addition of pentavalent impurity provides a large number of free electrons in the semiconductor crystal .Such impurities are called donor impurities as they donate free electrons to the semiconductor crystal.


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