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The bond length of `C-O` bond in carbon monoxide is `1.128A` The `C-O` bond length in `[Fe(CO)_(5)]` is .

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The bond length of `C-O` bond in carbon monoxide is `1.128A` The `C-O` bond length in `[Fe(CO)_(5)]` is .
A. `1.15A`
B. `1.128A`
C. `1.13A`
D. `1.118A`
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The metal to ligand bonding creates a synergic effect which strengthens the bond between `Co` and the metal (Fe) leading to decrease in bond order and increase in bond length i.e from `1.128 A` to `1.13A` .
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