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Question

To get a ntype semiconductor from silicon, it should be doped with a substance with valence _______.

A
2
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B
1
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C
3
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D
5
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Solution

The correct option is D 5
An ntype semiconductor is made by adding a small amount of a Group-V element such as phosphorous (P) or arsenic (As) to the intrinsic semiconductor. Group-V elements have five valence electrons per atom.
So, correct answer is option D.

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