JEE Main & Advanced JEE Main Paper (Held on 10-4-2019 Morning)

  • question_answer During the change of \[{{O}_{2}}\]to \[O_{2}^{-},\]the incoming electron goes to the orbital : [JEE Main 10-4-2019 Morning]

    A) \[\sigma {{*}^{2}}{{P}_{z}}\]                  

    B) \[{{\pi }^{2}}{{P}_{y}}\]

    C) \[\pi *\,{{\,}^{2}}{{P}_{x}}\]

    D) \[\pi {{\,}^{2}}{{P}_{x}}\]

    Correct Answer: C

    Solution :

                A complex having strong field ligand has tendency to absorb light of highest energy. Among the three complexes. \[{{\left[ Co{{(N{{H}_{3}})}_{6}} \right]}^{+3}}\]will absorb radiation of highest energy and least wavelength. \[{{\left[ Co{{(N{{H}_{3}})}_{5}}{{H}_{2}}O \right]}^{+3}}\]has field weaker than the above compound and therefore absorb radiation of lesser energy and more wavelength. \[{{\left[ CoCl{{(N{{H}_{3}})}_{5}} \right]}^{+2}}\]has the weakest field and therefore will absorb light of least energy and highest wavelength. Strength of ligand \[N{{H}_{3}}>{{H}_{2}}O>Cl.\]        Molecular orbital diagram of \[{{O}_{2}}\]is             An incoming electron will go in \[\pi _{2{{p}_{x}}}^{*}\] orbital.

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