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UPSC Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank Elements Classification and Chemical Bonding

  • question_answer
          Which of the following is correct set of Dobereiner Triads?

    A) Na, Si, CI         

    B)                  Be, Mg, Ca

    C) F, CI, I                  

    D)        Li, Na, Be

    Correct Answer: B

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