ChemHMWK8 - Weinelt, Karl Homework 8 Due: Nov 6 2003, 2:00...

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Weinelt, Karl – Homework 8 – Due: Nov 6 2003, 2:00 pm – Inst: Donna Lyon 1 This print-out should have 35 questions, check that it is complete. Multiple-choice questions may continue on the next column or page: fnd all choices beFore making your selection. The due time is Central time. This HW assignment is due by 2:00 PM on Thursday, November 6. 001 (part 1 oF 1) 10 points The electronic geometry oF a molecule may be di±erent From the molecular geometry be- cause 1. the electronic geometry does not consider antibonding orbitals, whereas the molecular geometry does. 2. the polarity oF the bonds in²uences the molecular geometry, but does not in²uence the arrangement oF the electrons. 3. the electronic geometry reFers to how the electrons are arranged, but the molecu- lar geometry indicates the net shape oF the molecule. 4. the molecular geometry reFers to how the electrons and atoms are arranged in three dimensions, but the electronic geometry indi- cates the hybridization in two dimensions. 5. the regions oF high electron density di±er For the electronic and molecular geometries. 002 (part 1 oF 1) 10 points Which oF the Following molecules is nonpolar? 1. SO 2 2. H 2 O 3. CH 3 Br 4. 3 5. 3 003 (part 1 oF 3) 10 points What is the electronic geometry oF I³ + 4 ? 1. octahedral 2. trigonal planar 3. T-shaped 4. tetrahedral 5. trigonal bipyramidal 004 (part 2 oF 3) 10 points What is the molecular geometry oF I³ + 4 ? 1. tetrahedral 2. square planar 3. cubic 4. T-shaped 5. see-saw 005 (part 3 oF 3) 10 points NH + 4 is a cation that is non-polar. Is I³ + 4 also non-polar ? 1. no, it’s polar 2. Cannot be determined From the structure 3. yes, it’s non-polar 006 (part 1 oF 1) 10 points Which oF the Following contains one atom whose bonding may be described in terms oF sp hybridization? 1. H 2 CO 2. SO 2 3. H 2 O 4. CH 4
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Weinelt, Karl – Homework 8 – Due: Nov 6 2003, 2:00 pm – Inst: Donna Lyon 2 5. BeCl 2 007 (part 1 of 1) 10 points The approximate F-B-F bond angle in the BF 3 molecule is 1. 109.5 2. 90
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This note was uploaded on 04/30/2008 for the course CH 301 taught by Professor Fakhreddine/lyon during the Spring '07 term at University of Texas at Austin.

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ChemHMWK8 - Weinelt, Karl Homework 8 Due: Nov 6 2003, 2:00...

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