Question

Which is the correct order of increasing bond energies c-h aromatic compounds?

Answer 1

The bond Length decreases with increase of bond order which is the multiplicity of bond.

If BO is 1 its a single bond; 2 for double bond and 3 for triple bond.

 

H2O2 has all single bond with bond length 1.41A0  

 

O2 has double bond with bond length 1.33A0  

 

O3 has a partial double bond due to the resonance of lone pairs of electrons thus if we arrange the above molecules a/c to their bond length it would be -  

 

H2O2 > O3 > O2