Question

Deviation of O-O bond length in ozone molecules from the normal bond length seems as
1) single bond length increases while
double bond length decreases
2)single bond length decreases while double bond length increases
3)single bond length increases while double bond length remain same
4)single bond length remains same while double bond length increases

Answer 1

Answer:

Actually ozone forms a resonance structure

1 is correct

Due to increase of pi bond charter bond length of double bond decreases

Answer 2

Answer:The answer would be (2), i.e, the length of single bond decreases while that of double bond increases.

Explanation:Due to resonance the Bond order of each O-O bond becomes 1.5

The single bond’s bond order is 1 and as we know bond order is inversely proportional to bond length, hence, its bond length decreases due to resonance...

Similarly, double bond order changes from 2 to 1.5 and hence bond length of double bond increases...

Hope it helps ya!!