Exam 1 - D. D. Grove Fall 2008 Name Pledged Section I:...

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D. D. Grove Exam I Organic Chemistry I Fall 2008 Eckerd College Page 1 of 3 H:\MyFiles\wpdocs\organic1\AY 08-09\Exams\Exam 1.doc Name Pledged Section I : Formal Charge and Resonance 1)(6 points) Add formal charges to the following Lewis structures. C C H H H C O B N H H H H H H C H H H C H H H N 2)(9 points) Draw one additional resonance contributor for the resonance hybrids below: H H H C C H H H O Section II : Orbitals, Orbital Hybrids, Geometry, & Molecules 3)(10 points) Starting with 2s atomic orbitals, construct the molecular orbitals for the hypothetical Li 2 molecule. Complete the additions of the atomic orbitals below by drawing molecular orbitals (MO). Indicate the number of nodes for each new MO. Which new MO will be of lower energy? + wave interaction two Li 2s orbitals that are in-phase + - + wave interaction two Li 2s orbitals that are out of phase Draw a potential energy diagram for the formation of the molecular orbitals above (insert the electrons, valence electrons only). Is the
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Exam 1 - D. D. Grove Fall 2008 Name Pledged Section I:...

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