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JEE Main & Advanced JEE Main Paper (Held On 12 May 2012)

  • question_answer
    Which among the following elements has the highest first ionization enthalpy?     JEE Main Online Paper (Held On 12 May 2012)

    A) Nitrogen             

    B)                        Boron

    C)                        Carbon                                

    D)                        Oxygen

    Correct Answer: A

    Solution :

                    Due to stable 2s2 2p3 configuration, (half filled p-orbital) Nitrogen atom has highest energy.


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