Draw structural formulas for 5 constitutional isomers that have one (and only one) three-membered ring and the molecular formula C6H12. Yes, each of the constitutional isomers that you give must be a substituted cyclopropane. Your structural formulas must have no nonzero formal charges and the most typical arrangements of bonding and nonbonding valence electrons.
Note: For this problem, you must give complete structural formulas showing all atoms and bonding valence electrons. Do not give condensed structural formulas or bond-line formulas.