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Assertion(A): Group -13 doped crystals of Silicon are called P-type semiconductors
Reason(R): Holes (positive in charge) appear to be responsible for the semiconducting properties

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Both A and R are True and R is correct

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Both A and R are True but R is not the correct

explanation of A

A is true but R is false

A is false but R is true

answer is A.

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Detailed Solution

Group-13 elements have one electron less than group-14 elements, so doping of group-13 elements with group-14 elements will now create electron deficiency, Hence it is called p-type semiconductor.

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