Q. Which of the following molecules has three-fold axis of symmetry?
A) $NH_{3}$
B) $C_{2}H_{4}$
C) $CO_{2}$
D) $SO_{2}$
Explanation
(a)
$NH_{3}$ molecule has three fold axis of symmetry because it has $sp^{3}$ hybridisation but due to presence of one lone pair of electron it has pyramidal structure.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.