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

  • question_answer Three complexes,
    \[{{[CoCl{{(N{{H}_{3}})}_{5}}]}^{2+}}(I),\]
    \[{{[Co{{(N{{H}_{3}})}_{5}}{{H}_{2}}O]}^{3+}}(II)\]and
    \[{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}(III)\]
    absorb light in the visible region. The correct order of the wavelength of light absorbed by them is :
                [JEE Main 10-4-2019 Morning]

    A) \[\left( III \right)>\left( I \right)>\left( II \right)\]            

    B) \[\left( I \right)>\left( II \right)>\left( III \right)\]

    C) \[(II)>\left( I \right)>\left( III \right)\]    

    D) \[\left( III \right)>\left( II \right)>\left( I \right)\]

    Correct Answer: B


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