Answer Happy

ich of the following an exists were cyclohexane methylcyclohexane 1.1-dimethylcyclohexane 1.2-dimethylcyclohen c d. 2. In methylcyclobrane all carbon atoms are sp hybrid 3 b. ring-carbon moms 2 bybridized and the metly resultat all bond angles are proximately 120 ring-bond angles are approximately 120 und the fingestyledge approximately 109 d. 3. Which of the following would have the smallest strain energy wat cyclobutane yelopentane cyclohexaned yclooctane c. 4 The specific rotation of a compounds dested by the symbol R S [a], 3. Which of the following statements repudine che a) Any disclaimer b) The plan for their metable slopstane is par to avoid the

d) The last strained form of any unsubstituted cycloalkane is the chair conformatica cyclohexane. 6. Which of the following statements regarding chair cyclohexane is wrong? a) The dihedral angle of the two axial bonds on adjacent carbons is 180". b) The dihedral angle of the two equatorial bonds on adjacent carbons is 60". The dihedral angle between the axial bond and the equatorial bond on adjacent carbons is d) The axial hydrogen atoms on CI, C3, and CS form an equilateral triangle (as do C1, CS, and C5 themselves and the equatorial hydrogens on them). 7. Which of (a)-(d) is not aromatie? 120 8. Which is the most stable structure of t-isopropyl-4-methylcyclohexane? CH, CH(CH, CH(CH3)2 CH b) C(CH C(CH, H CH CH, d) c) 9. Which structure is different from the following 1