JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Sample Paper Topic Test - Periodic Table

  • question_answer
    The electronic configuration of an element is \[1{{s}^{2}},\text{ }2{{s}^{2}}2{{p}^{6}},\text{ }3{{s}^{2}}3{{p}^{4}}\]. The atomic number of the element present just below the above element in the periodic table -

    A) 36

    B) 34    

    C) 33

    D) 32

    Correct Answer: B

    Solution :

    [b] At. No. = 16(S) Next element below this element has atomic number = 16 + 18 = 34.


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