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Q.
Increasing order of carbon-oxygen bond length in $CO , CO _{2}$ and $CO _{3}{ }^{2-}$ is
Chemical Bonding and Molecular Structure
Solution:
Bond order of carbon-oxygen
in $CO$ is $3$
in $CO _{2}$ is $2$
in $CO _{3}^{2-}$ is $1.33$ (Due to resonance)
Bond order $\propto \frac{1}{ E }$
Bond length
Structure
resonance stabilised
