In [Fe(CO)_5],the Fe-C bond has | vedclass

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(D) In the metal carbonyl complex $[Fe(CO)_5]$,the $Fe-C$ bond possesses both $\sigma$ and $\pi$ character. The $\sigma$ bond is formed by the donatio

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both $\pi$ and $\sigma$ character

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(D) In the metal carbonyl complex $[Fe(CO)_5]$,the $Fe-C$ bond possesses both $\sigma$ and $\pi$ character. The $\sigma$ bond is formed by the donation of electron pairs from the $CO$ ligand into the vacant $d$-orbitals of the $Fe$ atom. The $\pi$ bond is formed by the back-donation of electrons from the filled $d$-orbitals of the $Fe$ atom into the vacant antibonding $\pi^*$ orbitals of the $CO$ ligand. This phenomenon is known as synergic bonding.

In $[Fe(CO)_5]$,the $Fe-C$ bond has

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