Multiple choice

Arrange the following in increasing order of H-E-H bond angle:

  1. NH3 2. PH3 3. AsH3 4. SbH3

  1. 1 < 2 < 3 < 4

  2. 2 < 4 < 3 < 1

  3. 3 < 2 < 1 < 4

  4. 4 < 2 < 3 < 1

  5. 4 < 3 < 2 < 1
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

All of these molecules have pyramidal geometry. On moving down the group, H-E-H bond angle decreases due to increase in atomic size. So, correct order of increasing H-E-H bond angles is SbH3 < AsH3 < PH3 < NH3.

Keep practicing — related questions