Which impurity is doped in Si to form an N-ty | vedclass

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(C) To form an $N$-type semiconductor,a pentavalent impurity (an element from Group $15$) must be added to an intrinsic semiconductor like $Si$ (Silic

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$As$

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(C) To form an $N$-type semiconductor,a pentavalent impurity (an element from Group $15$) must be added to an intrinsic semiconductor like $Si$ (Silicon).$As$ (Arsenic) is a pentavalent element,meaning it has $5$ valence electrons.When $As$ is doped into $Si$,$4$ of its valence electrons form covalent bonds with $Si$ atoms,and the $5$th electron becomes a free charge carrier,contributing to $N$-type conductivity.$Al$ (Aluminum) and $B$ (Boron) are trivalent impurities (Group $13$) and are used to create $P$-type semiconductors.

Which impurity is doped in $Si$ to form an $N$-type semiconductor?

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