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Chemical Bonding and Molecular Structure question

2007 · Q98
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Chemical Bonding and Molecular Structure question

2007 · Q98

NEETChemistryChemical Bonding and Molecular StructureMCQ+4 / −1
The correct order of C −-− O bond length among CO, CO32−{_3^{2 - }}32−​, CO2 is
  1. A
    CO < CO32−{_3^{2 - }}32−​ < CO2
  2. B
    CO32−{_3^{2 - }}32−​ < CO2 < CO
  3. C
    CO < CO2 < CO32−{_3^{2 - }}32−​
  4. D
    CO2 < CO32−{_3^{2 - }}32−​ < CO
View written solutionFree

Correct answer: C

All these structures exhibits resonance and can be represented by the following resonating structures.

AIPMT 2007 Chemistry - Chemical Bonding and Molecular Structure Question 67 English Explanation

More single bond character in resonance hybrid, more is the bond length. Hence the increasing bond length is

CO <\lt < CO2 <\lt < CO32−{_3^{2 - }}32−​

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