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hunt-Exam_1-51133108 - HONORS 32 1 EXAM 1 September 28,2007...

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HONORS 32 1 - EXAM 1 September 28,2007 I TOTAL I 150 Budget your time in accordance to the point values indicated. You have 1 hour and 20 minutes to complete the exam. GOOD LUCK!
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1. Draw a valid Lewis structure for AlF3, Would you expect the aluminum atom to be electrophilic or nucleophilic? Why?' 2. Circle the following pairs of structures that do not constitute resonance structures. For the proper resonance pairs, draw curved arrows to convert the first structure to the second. Draw in all lone pairs that you move.
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3. (a) Draw all of the relevant resonance structures for B, and rank them by energy (1 = lowest energy). If two or more resonance structures are similar in energy, give them the same ranking. L - 0: (b) Label the nucleophilic atoms in B. * jl C 11 RI;w a *&? 4. Draw a molecular orbital picture for each of the following molecules. Include all bonding and non-bonding orbitals, and label each clearly.
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5. (a) Assign the appropriate hybridization to each of the indicated atoms.
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