Question

The correct order in which the $ \text{o}-\text{o} $ bond length increases in the following is

• A. $ {{H}_{2}}{{O}_{2}}<{{O}_{2}}<{{O}_{3}} $
• B. $ {{O}_{3}}<{{H}_{2}}{{O}_{2}}<{{O}_{2}} $
• C. $ {{O}_{2}}<{{O}_{3}}<{{H}_{2}}{{O}_{2}} $
• D. $ {{O}_{2}}<{{H}_{2}}{{O}_{2}}<{{O}_{3}} $

Answer 1

Answer: (D)

Bond length of $ \text{o}-\text{o} $ in $ {{O}_{2}}=1.21\overset{\text{o}}{\mathop{\text{A}}}\, $
Bond length of $ \text{o}-\text{o} $ in $ {{O}_{3}}=1.278\,\overset{\text{o}}{\mathop{\text{A}}}\, $
Bond length of $ \text{o}-\text{o} $ in $ {{H}_{2}}{{O}_{2}}=1.49\overset{\text{o}}{\mathop{\text{A}}}\, $
Therefore, correct order of
$ \text{o}-\text{o} $ bonds length is (bond order decrease in the same order)
$ {{O}_{2}}<{{O}_{3}}<{{H}_{2}}{{O}_{2}} $
Bond length of
$ \text{o}-\text{o} $ in $ {{H}_{2}}{{O}_{2}}=1.49\overset{\text{o}}{\mathop{\text{A}}}\, $