Which of the following cycloalkanes has the least angle strain?
A)Cyclopropane
B)Cyclohexane
C)Cyclopentane
D)Cycloheptane

Question

Quizplus · Accepted Answer

Cyclohexane has the least amount of angle strain because each of its carbon-carbon bonds is very close to 109.5 degrees, which is the ideal tetrahedral bond angle. In contrast, the other cycloalkanes have more deviation from this ideal angle, leading to greater angle strain. Cyclopentane has slightly more angle strain than cyclohexane, while cyclopropane and cycloheptane have significantly more angle strain.

Which of the Following Cycloalkanes Has the Least Angle Strain