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  4. The bond order in CO 32- ion between C - O is :

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Q. The bond order in $CO _{3}^{2-}$ ion between $C - O$ is :

Punjab PMETPunjab PMET 2004

Solution:

We know that carbonate ion has following resonating structures
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Bond order $=\frac{\text { total number of bonds between atoms }}{\text { total number of resonating structures }}$
$=\frac{1+1+2}{3}=\frac{4}{3}$
$=1.33$

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