NEET Sample Paper NEET Sample Test Paper-76

  • question_answer
    Which of the following has highest 2 nd ionisation energy?

    A)  0 6                              

    B)  N

    C)  C                                

    D)  B

    Correct Answer: A

    Solution :

    Electronic configuration of oxygen is \[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{4}}\] \[O(2{{p}^{4}})\xrightarrow{-e}\,O\,(2{{p}^{3}})\,\,\xrightarrow{-e}\,\,O\,(2{{p}^{2}})\] \[\uparrow \] Half filled electronic configuration


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