Chemistry 2213a Final Exam, Fall 2008 Page 1 Before starting the exam, be sure that you have correctly entered your: Student number Exam code 1. All valence electrons are shown for the Lewis structures below. Which species bears an overall positive charge (i.e.is a cation)? A)CCHB)COHHHHHC)NCCOHHHHD)HCCCHHHHOE)CCClCOHHHHF2. How many of the following species contain exactly three sp2-hybridized atoms? OONHONH2CO2
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