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Q.

To get n-type doped semiconductor, impurity to be added to silicon should have the follow-ing number of valence electrons :

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a

2

b

1

c

3

d

5

answer is B.

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Detailed Solution

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  • To prepare n-type semiconductor the impurity to be added to silicon should have 5 valence electrons.
  • In n-type semiconductors, electrons are the majority carriers and holes are the minority carriers.
  • n-type semiconductors are created by doping an intrinsic semiconductor with donor impurities.
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