Chemical Bonding And Molecular Structure Question 468

Question: The internuclear distances in $ ~O-O $ bonds for $ O_2^{+},O_2,O_2^{-} $ and $ O_2^{2-} $ respectively are:

Options:

A) $ 1.30\overset{o}{\mathop{A}},,1.49\overset{o}{\mathop{A}},,1.12\overset{o}{\mathop{A}},,1.21\overset{o}{\mathop{A}}, $

B) $ 1.49\overset{o}{\mathop{A}},,1.21\overset{o}{\mathop{A}},,1.12\overset{o}{\mathop{A}},,,1.30\overset{o}{\mathop{A}}, $

C) $ 1.21\overset{o}{\mathop{A}},,1.12\overset{o}{\mathop{A}},,1.49\overset{o}{\mathop{A}},,1.30\overset{o}{\mathop{A}}, $

D) $ 1.12\overset{o}{\mathop{A}},,1.21\overset{o}{\mathop{A}},,1.30\overset{o}{\mathop{A}},,1.49\overset{o}{\mathop{A}}, $

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Answer:

Correct Answer: D

Solution:

  • The bond length follows the order $ O_2^{+}<O_2<O_2^{-}<O_2^{2-}~ $ According to this the possible values are $ 1.12\overset{o}{\mathop{A}}1.21\overset{o}{\mathop{A}}1.30\overset{o}{\mathop{A}}1.49\overset{o}{\mathop{A}}, $


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