Which of the following complex/ion has highest C-O bond length ?

[V (C O)_{6}]^{-}

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F e (C O)_{5}

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N i (C O)_{4}

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[M n (C O)_{6}]^{+}

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Solution

The correct option is B $[V (C O)_{6}]^{-}$
There are vacant orbitals in central atom in $[V (C O)_{6}] -$ which results in synergic bonding. Due to synergic bonding between V and CO the bond length between C and O increases.

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Similar questions

C - O

Which of the following has longest C-O bond length? (Free C-O bond length in CO is 1.128 A.)

[M n (C O)_{6}]^{+}, [T i (C O)_{6}], [C r (C O)_{6}]

[V (C O)_{6}]^{-}

C - O

N i (C O)_{4}

F e (C O)_{5}

V (C O)_{6}

C r (C O)_{6}

[V (C O)_{6}]^{-}, [C r (C O)_{6}]

[M n (C O)_{6}]^{+}

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