JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank Critical Thinking

  • question_answer
    A sudden large jump between the values of second and third ionisation energies of an element would be associated with the electronic configuration [CBSE PMT 1992; AFMC 1998; CPMT 1999]

    A) \[1{{s}^{2}},\,2{{s}^{2}}{{p}^{6}},\,3{{s}^{1}}\]

    B) \[1{{s}^{2}},\,2{{s}^{2}}{{p}^{6}},\,3{{s}^{2}}{{p}^{1}}\]

    C) \[1{{s}^{2}},\,2{{s}^{2}}{{p}^{6}},\,3{{s}^{2}}{{p}^{2}}\]

    D) \[1{{s}^{2}},\,2{{s}^{2}}{{p}^{6}},\,3{{s}^{2}}\]

    Correct Answer: D

    Solution :

    \[1{{s}^{2}}2{{s}^{2}}{{p}^{6}}3{{s}^{2}}\]- In III transition \[{{e}^{-}}\] is to be removed from stable configuration.


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