Feb 23-solutions - chauhan (mmc2762) Feb 23 sparks (51150)...

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Unformatted text preview: chauhan (mmc2762) Feb 23 sparks (51150) 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 2) 10.0 points What is the molecular shape of NO 2 ? 1. trigonal bipyramidal 2. bent correct 3. tetrahedral 4. trigonal pyramidal 5. linear 6. trigonal planar Explanation: In determining the shape of a molecule, double bonds count the same as single bonds. NO 2 is bent (AX 2 E) : bracketleftBigg N O b b b b b b O b b b b b b bracketrightBigg 002 (part 2 of 2) 10.0 points What bond angles are expected? 1. 180 only 2. 90 only 3. 120 only correct 4. 109.5 only 5. 150 only 6. 120 , 180 , and 90 Explanation: The bond angle is approximately 120 only. 003 10.0 points Choose the species that is incorrectly matched with electronic geometry about the central atom. 1. ClO 4 : tetrahedral 2. SO 2 3 : pyramidal correct 3. NO 2 : trigonal planar 4. ClO 3 : tetrahedral...
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This note was uploaded on 04/03/2012 for the course CHEM 56920 taught by Professor Sparks during the Spring '12 term at University of Texas at Austin.

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Feb 23-solutions - chauhan (mmc2762) Feb 23 sparks (51150)...

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