Which statement is correct regarding the char | vedclass

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(B) When a pentavalent impurity atom is added to a pure semiconductor to create an $N$-type semiconductor,it donates one free electron to the crystal,

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Both $N$-type and $P$-type germanium are neutral.

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(B) When a pentavalent impurity atom is added to a pure semiconductor to create an $N$-type semiconductor,it donates one free electron to the crystal,leaving a positive charge on the donor atom. The donated electron remains in the crystal in a free state. Since the charge on the donor ion is equal and opposite to the charge of the electron,the crystal itself remains electrically neutral.Similarly,when a trivalent impurity atom is added to create a $P$-type semiconductor,the acceptor atom gains an electron,creating a hole. The negative charge on the acceptor ion is balanced by the positive charge of the hole. Thus,the $P$-type semiconductor is also electrically neutral.Therefore,both $N$-type and $P$-type germanium are electrically neutral. The correct option is $B$.

Which statement is correct regarding the charge of doped semiconductors?

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