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(D) In metal carbonyls,the metal-carbon bond is formed by the donation of lone pair electrons from $CO$ to the metal (sigma donation) and the back-don

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$\pi$-backbonding strengthens $M-C$ bond order & weakens $CO$ bond order

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(D) In metal carbonyls,the metal-carbon bond is formed by the donation of lone pair electrons from $CO$ to the metal (sigma donation) and the back-donation of electrons from the metal $d$-orbitals to the empty antibonding $\pi^*$ orbitals of $CO$ ($\pi$-backbonding).This $\pi$-backbonding increases the electron density in the antibonding $\pi^*$ orbital of $CO$,which decreases the $CO$ bond order.Simultaneously,the $\pi$-backbonding introduces partial double bond character to the $M-C$ bond,thereby increasing the $M-C$ bond order.

$LIST-I$ (Substances)	$LIST-II$ (Element Present)
$A$. Ziegler catalyst	$I$. Rhodium
$B$. Blood pigment	$II$. Cobalt
$C$. Wilkinson catalyst	$III$. Iron
$D$. Vitamin $B_{12}$	$IV$. Titanium

Select the true statement from the following for metal carbonyls?

Similar Questions

Match List-$I$ with List-$II$:

$LIST-I$ (Substances) $LIST-II$ (Element Present)

$A$. Ziegler catalyst $I$. Rhodium

$B$. Blood pigment $II$. Cobalt

$C$. Wilkinson catalyst $III$. Iron

$D$. Vitamin $B_{12}$ $IV$. Titanium

Choose the correct answer from the options given below:

Zeise's salt is

Which statement is true for ferrocene?

Ziegler-Natta catalyst is an organometallic compound of which metal?

Give an example of synergistic bonding interaction in a carbonyl complex.

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