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Discussion :: Electronic Devices and Circuits

  1. Which of the following elements act as donor impurities?

    1. Gold
    2. Phosphorus
    3. Boron
    4. Antimony
    5. Arsenic
    6. Indium
    Select the answer using the following codes :

    2. A.
    1, 2 and 3
    B.
    1, 2, 4, and 6
    C.
    3, 4, 5 and 6
    D.
    2, 4 and 5

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    Answer : Option D

    Explanation :

    Only antimony, arsenic and phosphorous are pentavalent.

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