If the bond length of CO bond in carbon monoxide is (1.128 \... | Chemistry | SolveeIt | Solveeit

Today, August 19

Question

If the bond length of CO bond in carbon monoxide is $1.128 \mathring{A},$ then what is the value of CO bond length in $Fe(CO)_5?$

A

$1.15 \mathring{A}$

B

$1.128 \mathring{A}$

C

$1.72 \mathring{A}$

D

$1.118 \mathring{A}$

Answer

$1.15 \mathring{A}$

Explanation

Solution

In CO, bond order = 3. In metal carbonyls like $Fe(CO)_5,$ due to $d \pi -p \pi$ back-bonding, bond order of CO decreases slightly therefore, bond length increases slightly