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    Question

    When silicon is doped with gallium, what type of

    semiconductor is formed? 
    A N-type semiconductor Correct Answer Incorrect Answer
    B Superconductor Correct Answer Incorrect Answer
    C P-type semiconductor Correct Answer Incorrect Answer
    D Insulator Correct Answer Incorrect Answer

    Solution

    When silicon, which has four valence electrons, is doped with gallium, which has three valence electrons, "holes" are created where electrons are missing. These holes can accept electrons, making the material a p-type semiconductor.

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