The correct statement(s) regarding the binary | vedclass

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

Question

(C) $1$. The total number of valence shell electrons at the metal centre in $Fe(CO)_5$ $(8 + 5 	imes 2 = 18)$ and $Ni(CO)_4$ $(10 + 4 	imes 2 = 18)$

Vedclass · Accepted Answer

$B, C$

Vedclass · Answer

(C) $1$. The total number of valence shell electrons at the metal centre in $Fe(CO)_5$ $(8 + 5 	imes 2 = 18)$ and $Ni(CO)_4$ $(10 + 4 	imes 2 = 18)$ is $18$,not $16$. Thus,statement $A$ is incorrect.$2$. Metal carbonyls are predominantly low spin complexes because $CO$ is a strong field ligand. Thus,statement $B$ is correct.$3$. The metal-carbon bond strengthens as the oxidation state of the metal decreases because a lower oxidation state increases the electron density on the metal,which enhances back-bonding to the $CO$ ligand. Thus,statement $C$ is correct.$4$. The $C-O$ bond weakens when the oxidation state of the metal is lowered (due to increased back-bonding),not when it is increased. Thus,statement $D$ is incorrect.

Similar Questions

Which of the following is incorrect for the complex $[Fe(CO)_x]$?

Which of the following compounds does not contain a metal-carbon bond?

The complex compounds which result from the coordination of carbon monoxide are known as

Carbon monoxide reacts with iron to form

Which of the following is not an organometallic compound?

Vedclass Test Series

Exam Paper Generator

Online Exam Module