AMU Medical AMU Solved Paper-2013

  • question_answer
    Mg with its external 3s2 configuration is

    A)  an insulator

    B)  a conductor

    C)  a semiconductor

    D)  a supersonic conductor

    Correct Answer: B

    Solution :

                    In magnesium, 3s energy band is completely filled. The filled 3s- energy band overlaps an empty 3p- energy band. Due to this, electrons flow under applied electric field from occupied band to unoccupied band. Thats why Mg is a conductor.


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