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

  • question_answer
    Direction for given below. The electronic configuration of three elements P, Q and R are given below.
    P :  2 8 3
    Q : 2, 7
    R :  2 8 1
    Which element belongs to group 17?

    A) P                                 

    B) Q

    C) R                                 

    D) Both P and R

    E) None of these

    Correct Answer: B

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