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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 a diagonally related pair?

    A) H, Be                                   

    B) Na, Mg      

    C) B, Si                                      

    D) K, Ca

    Correct Answer: C

    Solution :

    B, Si; Be, Al and Li, Mg; are diagonally related pairs.


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