Q. Least stable conformer of cyclohexane is
A) Chair
B) Boat
C) Twist boat
D) Planar hexagon
Explanation
(d)
Planar hexagon conformer has considerable angle strain due to the fact that its bonds are not 109.5${^\circ}$. It also has torsional strain. Due to presence of these strains planar hexagon conformer of cyclohexane is least stable.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.