JEE Main & Advanced JEE Main Online Paper (Held on 9 April 2013)

  • question_answer
    In which of the following ionization processes the bond energy has increased and also the magnetic behaviour has changed from paramagnetic to diamagnetic?                   JEE Main Online Paper (Held On 09 April 2013)

    A) \[ N\operatorname{O}\to {{\operatorname{NO}}^{+}}\]                        

    B) \[{{N }_{2}}\to {{\operatorname{N}}_{2}}^{+}\]                          

    C) \[{{C}_{2}}\to {{C}_{2}}^{+}\]                

    D) \[{{O}_{2}}\to {{O}_{2}}^{+}\]                

    Correct Answer: A

    Solution :

                    \[1.NO\xrightarrow{}N{{O}^{+}}\]                 \[15{{e}^{-}}\]   \[14{{e}^{-}}\]                   \[2.\underset{14}{\mathop{{{N}_{2}}}}\,\xrightarrow{\,}\underset{13}{\mathop{N_{2}^{+}}}\,\]                 \[3.\underset{12}{\mathop{{{C}_{2}}}}\,\xrightarrow{\,}\underset{11}{\mathop{C_{2}^{+}}}\,\]                 \[4.\underset{16}{\mathop{{{O}_{2}}}}\,\xrightarrow{\,}\underset{15}{\mathop{O_{2}^{+}}}\,\]                 In \[N{{O}^{+}}\] all electrons are paired, hence, it is diamagnetic.                


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