JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties Question Bank Valency and oxidation state

  • question_answer The basis of keeping the elements in the group of a periodic table is [RPET 1999]

    A) Ionisation potential

    B) Electronegativity

    C) Electron affinity

    D) Number of electrons in the valence shell

    Correct Answer: D

    Solution :

    The elements which having same number of electrons in the valence shell are placed in the same group of periodic table.


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