What is the minimum condition required for a simple, saturated cycloalkane ring (like cyclopropane o — Isomerism and Stereochemistry Chemistry Question

💡 Solution & Explanation

A rigid ring prevents $360^\circ$ free rotation. For GI to be physically observed (cis/trans faces), the ring must feature at least two separately substituted $sp^3$ carbons where the exocyclic groups differ (e.g., 1,2-dimethylcyclopropane). 1,1-dimethylcyclopropane fails this test.