In which of the following, molecules are arranged in the increasing order of their bond angles?

• A

  $\mathrm{NH}_3 < \mathrm{SO}_2 < \mathrm{H}_2 \mathrm{O}$
• Correct answer
  B

  $\mathrm{H}_2 \mathrm{O} < \mathrm{NH}_3 < \mathrm{SO}_2$
• C

  $\mathrm{SO}_2 < \mathrm{NH}_3 < \mathrm{H}_2 \mathrm{O}$
• D

  $\mathrm{SO}_2 < \mathrm{H}_2 \mathrm{O} < \mathrm{NH}_3$

Solution

Increasing order of bond angle $=\mathrm{H}_2 \mathrm{O} < \mathrm{NH}_3 < \mathrm{SO}_2$

Hence, the correct answer is option: 'B'.