In the isoelectronic series of metal carbonyl | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) In metal carbonyls,the $CO$ bond strength is inversely proportional to the extent of $\pi$-back bonding from the metal to the $CO$ ligand. As the

Vedclass · Accepted Answer

$[V(CO)_6]^- < [Cr(CO)_6] < [Mn(CO)_6]^+$

Vedclass · Answer

(B) In metal carbonyls,the $CO$ bond strength is inversely proportional to the extent of $\pi$-back bonding from the metal to the $CO$ ligand. As the positive charge on the central metal atom increases,its ability to donate electron density into the $\pi^*$ anti-bonding orbitals of the $CO$ ligand decreases. The oxidation states of the metals are $V$ in $[V(CO)_6]^-$ is $-1$,$Cr$ in $[Cr(CO)_6]$ is $0$,and $Mn$ in $[Mn(CO)_6]^+$ is $+1$. Therefore,the extent of back-bonding decreases in the order $[V(CO)_6]^- > [Cr(CO)_6] > [Mn(CO)_6]^+$. Consequently,the $CO$ bond strength increases in the order $[V(CO)_6]^- < [Cr(CO)_6] < [Mn(CO)_6]^+$.

In the isoelectronic series of metal carbonyls,the $CO$ bond strength is expected to increase in the order:

Similar Questions

In the brown ring complex $[Fe(H_2O)_5NO]SO_4$,the primary valency (oxidation state) of $Fe$ is:

The logarithm of $32\sqrt[5]{4}$ to the base $2\sqrt{2}$ is:

Crossing over occurs between which of the following?

$A$ galvanometer of resistance $G$ is connected in a circuit. Now,a resistance $R$ is connected in series with the galvanometer. To keep the main current in the circuit unchanged,the resistance $S$ to be put in parallel with the series combination of $G$ and $R$ is:

What is the $IUPAC$ name of the following compound?

Vedclass Test Series

Exam Paper Generator

Online Exam Module