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AP EAMCET · Chemistry · Chemical Bonding and Molecular Structure

Arrange \(\mathrm{O}_2, \mathrm{O}_2\left[A s \mathrm{~F}_6\right], \mathrm{KO}_2\) in the increasing order of bond length of \(\mathrm{O}-\mathrm{O}\) bond.

  1. A \(\mathrm{O}_2 < \mathrm{KO}_2 < \mathrm{O}_2\left[\mathrm{AsF}_6\right]\)
  2. B \(\mathrm{KO}_2 < \mathrm{O}_2 < \mathrm{O}_2\left[\mathrm{AsF}_6\right]\)
  3. C \(\mathrm{O}_2\left[\mathrm{AsF}_6\right] < \mathrm{KO}_2 < \mathrm{O}_2\)
  4. D \(\mathrm{O}_2\left[\mathrm{AsF}_6\right] < \mathrm{O}_2 < \mathrm{KO}_2\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\mathrm{O}_2\left[\mathrm{AsF}_6\right] < \mathrm{O}_2 < \mathrm{KO}_2\)

Step-by-step Solution

Detailed explanation

Bond length \(\propto \frac{1}{\text { Bond order }}\) In \(\left.\mathrm{K}_2 \mathrm{O}_2\right)\) or \(\mathrm{O}_2^{-}\)bond order is 1.5 . In \(\mathrm{O}_2\) bond order is 2 . In \(\mathrm{O}_2\left(\mathrm{AsF}_6\right)\) or \(\mathrm{O}_2^{+}\)bond order is 2.5 . Hence,…