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.-2 A. 1R, 2S 1. A neutral molecule (₁) shell is called A. radical B. carbocation C. carbene D. carbanion 2. Which of the following statements is FALSE for the reaction described by the energy diagram below? H H Name CHEMISTRY 2423 FINAL EXAM-VERSION B Spring 2022 DIRECTIONS: A periodic table is attached at the end of this exam. Please make sure your structures are drawn clearly and indicate any necessary stereochemistry with bold and dashed bonds. Part I. Multiple choice. Circle the best answer. (40 points) reaction progress 3. Which of the following structures represents gauche butane? CH₂ CH₂ H B. -1 H Br B. 1R, 2R H CH₂ A B. 4. What are the configurations of the stereocenters in the following molecule? OH N-H H Az) containing a divalent carbon with only six electrons in its valence H A. The reaction is exothermic B. The first step is the rate determining step C. There are two transition states in this reaction mechanism D. ii) is an intermediate C.0 H CH₂ H H 5. What is the formal charge of the nitrogen atom in the molecule shown below? H C. IS, 2R CH₂ C. D. +1 CH₂ H H H D. IS, 2S E. radical cation CH₂ H D. CH₂ H