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How to solve this question?I`m not getting approach!

How to solve this question?I`m not getting approach!

Question Image
Grade:12

1 Answers

varun
304 Points
3 years ago
HELLO VARAD
i will help you to solve this question
Remember this,
Higher the bond order,lower will be the bond length
=> In CO there is triple bond between C & O 
=> In CO2 there is two double bonds hence bond length will longer than CO
=> In CO3^2- ,it is resonance hybrid of two single bond and one double bond between C&O so bond length will be shorter than single bond and longer than double bond
So the order is 
CO3^2-
So option A is correct
THANK YOU

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