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If the bond length of CO bond in carbon monoxide is 1.128 ~A ^ , then what is the value of CO bond length in Fe ( CO )₅ ?

Options

  1. A1.15 Å
  2. B1.128 Å
  3. C1.72 Å
  4. D1.118 Å

Correct answer

A. 1.15 Å

Step-by-step solution

The metal (Fe) makes the back bonding to CO . The metal to ligand bonding creates a synergic effect which strengthens the bond CO and the metal ( Fe ). Which results in the contraction of CO bond length (Synergic means working together towards a common end. This is a bond formed by a ligand to metal ion which has a -bond from ligand to metal ion and the back donation of electron density from the metal to the ^* orbitals on the ligand. Thus enhancing the acceptor strength of the p-orbital. Hence up to a point the ef

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