The correct order of increasing C - O bond length CO, CO2-3 , CO2 is:

Question

The correct order of increasing C - O bond length CO, CO2-3 , CO2 is: (A) CO < CO2 < CO2-3 (B) CO2 < CO2-3 < CO  (C) CO < CO2-3 < CO2  (D)  CO2-3 < CO3 < CO

Tardigrade Admin · Accepted Answer

The bond order of CO is 3 . The bond order of CO 2 is 2 . The bond order of CO 32- is 1.33 (due to resonance). Since, bond length propto (1/ text bond order ) So, bond length order is CO < CO 2< CO 32-.

Q. The correct order of increasing $C - O$ bond length $CO, C O_{3}^{2 -}, C O_{2}$ is:

$CO < C O_{2} < C O_{3}^{2 -}$

$C O_{2} < C O_{3}^{2 -} < CO$

$CO < C O_{3}^{2 -} < C O_{2}$

$C O_{3}^{2 -} < C O_{3} < CO$

The bond order of $CO$ is $3$ .
The bond order of $C O_{2}$ is $2$ .
The bond order of $C O_{3}^{2 -}$ is $1.33$ (due to resonance).
Since, bond length $\propto \frac{1}{bond order}$
So, bond length order is $CO < C O_{2} < C O_{3}^{2 -}$ .

Q. The correct order of increasing C−O bond length CO,CO32−​,CO2​ is:

CO<CO2​<CO32−​

CO2​<CO32−​<CO

CO<CO32−​<CO2​

CO32−​<CO3​<CO