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JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank Self Evaluation Test - Classification of Elements and Periodicity in Properties

  • question_answer
    Similarity in chemical properties of the atoms of elements in a group of the Periodic table is most closely related to:

    A) atomic numbers

    B) atomic masses

    C) number of principal energy levels

    D) number of valence electrons

    Correct Answer: A

    Solution :

    [a] If elements are arranged in order of their increasing atomic numbers, element coming at intervals of 2, 8, 8, 18, 18, 32 and 32 will have similar physical and chemical properties and thus grouped in one particular group.


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