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Solution


Q.

Given below are two statements:                                                     [2025]

Statement I: Experimentally determined oxygen-oxygen bond lengths in the O3 are found to be same and the bond length is greater than that of a O = O (double bond) but less than that of a single (O – O) bond.

Statement II: The strong lone pair-lone pair repulsion between oxygen atoms is solely responsible for fact that the bond length in ozone is smaller than that of a double bond (O = O) but more than that of a single bond (O – O).

In the light of the above statements, choose the correct answer from the options given below:
1 Statement I is false but Statement II is true.  
2 Both Statement I and Statement II are true.  
3 Both Statement I and Statement II are false.  
4 Statement I is true but Statement II is false.  

Ans.

(4)

Due to resonance both bonds in ozone have same length. More is bond order, shorter is the bond. So order of bond length is :

O-O>O3>O=O