CHEM 104A Midterm: chem104A-sp2004-mt2-Cramer-soln
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Total exam score ____ closed text, closed notes, no calculators. General advice - if you are stumped by one problem, move on to finish other problems and come back later if time permits. You may use the whole class period: general (10 points) 2 points each. True or false (enter t or f on line) next to statement: A linear molecule has 3n-5 normal modes, where n is the number of atoms. Vibrations of molecules with inversion centers are not both raman & ir active. Molecules are free to rotate at any velocity. The first structure minimizes the number of non-zero formal charges. Grade this page__: vibrational spectroscopy (30 points) 2 points each answer. No, because vibration d. does not include any xe motion. For the sketches below, circle the case with the higher bond energy, and briefly state why (in the margin). a. b. 18. 6 ev more overlap (big s) or or.
