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Quiz%204%20Fall%202010

Quiz%204%20Fall%202010 - Version 001 Quiz 4 sparks(50990...

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Version 001 – Quiz 4 – sparks – (50990) 1 This print-out should have 7 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. ChemPrin3e 03 15 16 001 1.0 points Predict the bond angle at the central atom of SeCl 2 . 1. 180 2. 90 3. slightly less than 120 4. slightly less than 109.5 correct 5. 30 6. 60 Explanation: Se Cl Cl ChemPrin3e T03 05 002 1.0 points Predict the electron arrangement in IF + 4 . 1. tetrahedral 2. trigonal bipyramidal correct 3. linear 4. trigonal planar 5. pentagonal bipyramidal 6. octahedral Explanation: There are five regions of electron density (including one lone pair) around the central atom: I F F F F + Msci 08 1521 003 1.0 points If a compound with formula AB 2 has two lone pairs on A, what must be the hybridization of A? 1. sp 3 correct 2. sp 2 3. sp 3 d 4. sp 5. sp 3 d 2 Explanation: Brodbelt 08 08 004 1.0 points How many σ and how many π bonds are there in HCN? C is the central atom.
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