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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

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    On the basis of following features identify correct option
    A. Gaps were left for undiscovered elements
    B. No correct position of hydrogen
    C. The isotopes of same element will be given different position
     

    A) Mendeleev's periodic table

    B) Modem periodic table

    C) Newland's arrangement of elements

    D) Both [a] and [b]

    Correct Answer: A

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