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10th Class Science Periodic Classification of Elements Question Bank Periodic Classification of Elements

  • question_answer
    Which one of the following is not a configuration of a noble gas?

    A) 2, 8, 18, 8

    B)                    2, 8, 18, 2

    C) 2, 8                              

    D) 2, 8, 18, 18, 8

    E) None of these

    Correct Answer: B

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