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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
          The long form of periodic table consists of

    A) seven periods and eight groups

    B) seven periods and eighteen groups

    C) eight periods and eighteen groups

    D) eighteen periods and eight groups

    Correct Answer: B

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