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AP EAMCET · Chemistry · Chemical Bonding and Molecular Structure

Observe the following sets
\begin{array}{|l|l|l|}\hline & {|c|}{ Order } & {c|}{ Property } \\\hline i. & \mathrm{NH}_3>\mathrm{H}_2 \mathrm{O}>\mathrm{SO}_2 & Bond angle \\\hline ii. & \mathrm{H}_2 \mathrm{O}>\mathrm{NH}_3>\mathrm{H}_2 \mathrm{~S} & Dipole moment \\\hline iii. & \mathrm{N}_2>\mathrm{O}_2>\mathrm{H}_2 & Bond enthalpy \\\hline iv. & \mathrm{NO}^{+}>\mathrm{O}_2>\mathrm{O}_2^{2-} & Bond order \\\hline\end{array}
Which of the above sets are correctly matched?

  1. A i, ii, iv only
  2. B ii, iii only
  3. C ii, iii, iv only
  4. D i, iii, iv only
Verified Solution

Answer & Solution

Correct Answer

(C) ii, iii, iv only

Step-by-step Solution

Detailed explanation

(i) In \(\mathrm{NH}_3\) and \(\mathrm{H}_2 \mathrm{O}\) bond angle should be \(109.28^{\circ}\) but in ammonia there is a lone pair-bond pair repulsion and in \(\mathrm{H}_2 \mathrm{O}\) two lone pair and bond pair repulsion which decrease the bond angle. \(\mathrm{SO}_2\) has…