q4f08 - Version PREVIEW Quiz 4 JOHNSON (53755) 1 This...

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Unformatted text preview: Version PREVIEW Quiz 4 JOHNSON (53755) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. LDE Bond Order 001 001 5.0 points Using molecular orbital theory, determine the bond order for O 2- ? 1. 1.5 correct 2. 1 3. 3 4. 2.5 5. 2 Explanation: The molecule would have 17 total electrons, 10 of which would be bonding and 7 of which would be anti-bonding. Therefore the bond order would be: (10- 7) / 2 = 1 . 5. LDE Paramagnetism 001 002 5.0 points Which of the following species is not param- agnetic? 1. CN 2. N 2 3+ 3. F 2- 4. OF 5. B 2 2- correct Explanation: The answer choices F 2- , OF, CN, and N 2 3+ all have an odd number of total electrons and therefore must be paramagnetic. LDE Ranking Bonding Trends 003 003 5.0 points Using molecular orbital theory, rank the fol- lowing species in terms of increasing bond length: O 2 , B 2 + , CN- , and F 2 ....
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This note was uploaded on 03/04/2011 for the course CH 302 taught by Professor Holcombe during the Spring '07 term at University of Texas at Austin.

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q4f08 - Version PREVIEW Quiz 4 JOHNSON (53755) 1 This...

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