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  1. The electronic configuration of an atom having atomic number ‘20’ is

    2. A.

     2, 8, 10
    B.

     2, 6, 8, 4
    C.

     2, 8, 8, 2
    D.

     2, 10, 8

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    Answer : Option C

    Explanation :

    The electronic configuration of an atom having atomic number ‘20’ is 2, 8, 8, 2.

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