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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 third period?

    A) P and Q                       

    B) Q and R

    C) P and R

    D) Q only

    E) None of these

    Correct Answer: C

    Solution :

    Not Available  


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