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old_exam - Name Problem 1(12 pts Draw a complete Lewis...

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Name: Problem 1 (12 pts) Draw a complete Lewis structure for each of the following molecules or ions and indicate formal charges. (None of the structures have O—O bonds) a. HCN b. CO 2 c. HCO 3 d. NO 2 Problem 2 (20 pts) Draw ALL the possible resonance structures for each of the following molecules using curved arrow notation to show the movement of electron. Are they all equivalent? If so, write “equivalent”. If not, circle the major (more important) resonance structure(s). a. Ozone (O 3 ) b. Diazomethane (CH 2 N 2 ) c. Guanidium Cation (Lewis structure below) NH 2 NH 2 H 2 N Problem 3 (8 pts) Predict the approximate bond angle in each of the following molecules. BeH 2 Cl 4 Si CH 2 CH 3 b. c. d. a. 1
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