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A perfect crystal of silicon (fig) is...

A perfect crystal of silicon (fig) is deped with some elements as given in the options , which of these options shows n- type semicondutors ?

A

B

C

D

Text Solution

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The correct Answer is:
A,C
n- type semiconductor when group 15 elements are dopend into a perfect crystal it leads to foprmation of n- type semiconductor .
Here in (a) as (group 15, period 3) is doped to perfedct Si - crystal and in (c ) as (group 15, period 2) is doped to perfect Si-crystal .
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