Chem Whitehead - CHM-102 Exam I Name • • • • •...

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Page 1 of 8 CHM-102 Exam I Spring 2002 Name Key Raw Score T-Score You will have one hour to complete the exam. There is one best answer to each question and all questions are worth the same number of points. Sign your name on the answer sheet above the General Purpose logo on the front. Print and fill in your name ( last name- space -first name ) on the back of your answer sheet. Be sure to mark the correct answers on your exam booklet so you can compare your answers to the answer key. An answer key will be posted immediately following the test at http://aa.uncwil.edu/chm102/keys/ . It will also be posted outside DO-236. The following six Lewis structures may be useful in answering questions 1 to 5. C H H Cl Cl O C O S H H H + I. II. III. ED Geo tetrahedral linear tetrahedral Mol Geo tetrahedral linear trigonal pyramidal Angles 109º 180º 109º Be Cl Cl B F F F P Cl Cl Cl Cl Cl IV. V. VI. ED Geo linear trigonal planar trigonal bipyramidal Mol Geo linear trigonal planar trigonal bipyramidal Angles 180º 120º 90º, 120º, 180º 1. Which molecule(s) has (have) tetrahedral electron domain geometry around the central atom? a. I b. I, II c. I, II, III d. I, III
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Page 2 of 8 2. Which molecules have a bond angle of 180º around the central atom? a. I, III b. I, II c. II, IV, VI d. I, ,II, IV 3. Which molecules are nonpolar? a. II, IV, V, VI b. II, III, IV, V, VI c. I, II, IV, V, VI d. They are all nonpolar 4. Which molecule(s) has (have) sp 2 hybridization around the central atom? a. II, III, IV b. II, IV,V c. V d. III,V 5. Which molecule(s) has (have) tetrahedral molecular geometry around the central atom? a.
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Chem Whitehead - CHM-102 Exam I Name • • • • •...

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