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

  • question_answer
    Which of the following configurations represents atoms of the elements having the highest second ionization energy [Pb. PMT 1998]

    A) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{4}}\]

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

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

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

    Correct Answer: C

    Solution :

    Because for removing second electron, it has to be taken out from stable configuration that needs a large amount of energy.


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