NEET NEET SOLVED PAPER 2016 Phase-I

  • question_answer Which of the following has longest C-O bond length? (Free C-O bond length in Co is\[1.128\overset{\text{o}}{\mathop{\text{A}}}\,\]).
    Note:- Since metal atom is carrying maximum -ve charge therefore it would show maximum synergic bonding as sa resultant C-O bond length would be maximum.

    A)  \[Ni{{(CO)}_{4}}\]                          

    B)  \[{{[Co{{(CO)}_{4}}]}^{\text{O}-}}\]

    C)  \[{{[Fe{{(CO)}_{4}}]}^{2-}}\]                     

    D)   \[{{[Mn{{(CO)}_{6}}]}^{+}}\]

    Correct Answer: C

    Solution :

                     \[{{[Fe{{(CO)}_{4}}]}^{2-}}\]

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