Which of the following molecules exhibits the least ring strain?

Question

Quizplus · Accepted Answer

cyclohexane has the least ring strain among the given options because it adopts a chair conformation, which allows all C-C bonds to be staggered and the hydrogen atoms to be as far apart as possible, minimizing steric interactions. Cyclobutane and cyclopropane are highly strained due to their small ring sizes, while cyclopentane and cycloheptane have varying degrees of strain but still more than cyclohexane.

Which of the Following Molecules Exhibits the Least Ring Strain