SATHEE: Co-Ordination Compounds Question 163

Co-Ordination Compounds Question 163

Question: Among the following metal carbonyls, the C-0 bond order is lowest in

Options:

A) ${[M n {(C O)}_{6}]}^{+}$

B) $[F e {(C O)}_{5}]$

C) $[C r {(C O)}_{6}]$

D) ${[V {(C O)}_{6}]}^{-}$

Show Answer

Answer:

Correct Answer: B

Solution:

(1) $M n^{+} = 3 d^{5} 4 s^{1} .$ In presence of $C O,$ effective configuration is $3 d^{6} 4 s^{0} .$

$\Rightarrow$ 3 lone pairs for back bonding with vacant orbital of C in CO. (2) $F e^{0} = 3 d^{6} 4 s^{2}$ .

In the presence of $C O$ , effective configuration is $3 d^{6}$ .

$\Rightarrow$ 4 lone pairs for back bonding with CO. (3) $C r^{0} = 3 d^{5} 4 s^{1}$ .

In the presence of CO, effective configuration is $3 d^{6} .$

$\Rightarrow$ 3 lone pairs for back bonding with CO.

(4) $V^{-} = 3 d^{4} 4 s^{2} .$ In the presence of CO effective configuration is $3 d^{6} .$

$\Rightarrow$ 3 lone pairs for back bonding with CO. These maximum back bonding in $[F e {(C O)}_{5}]$ , therefore CO bond order is lowest

Co-Ordination Compounds Question 163

Question: Among the following metal carbonyls, the C-0 bond order is lowest in

Options:

Answer:

Solution:

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Co-Ordination Compounds Question 163

Question: Among the following metal carbonyls, the C-0 bond order is lowest in

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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