hw 4 - shah (rps587) Homework 4 mcdevitt (52365) This...

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shah (rps587) – Homework 4 – mcdevitt – (52365) 1 This print-out should have 20 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points A molecule has one lone pair oF electrons on the central atom and three atoms bonded to the central atom. What is its electronic ar- rangement and its hybridization? 1. tetrahedral; sp 3 correct 2. trigonal planar; sp 2 3. pyramidal; sp 2 4. tetrahedral; sp 2 5. pyramidal; sp 3 6. trigonal planar; sp 3 7. angular; sp 3 Explanation: One lone pair plus 3 bonded pairs equals 4 electronic regions. This means that the central atom is tetrahedral and hybridization is sp 3 . 002 10.0 points Which atomic orbitals Form the sp 3 d hybrids? 1. one s , three p , one d correct 2. two s , one p , two d 3. one s , two p , two d 4. one s , one p , one d 5. two s , two p , one d Explanation: You simply need to look at the superscripts to determine which orbitals are Forming the hybrid. 003 10.0 points What is the hybridization oF carbon in CH 2 O? C is the central atom. 1. sp 2. sp 3 3. sp 3 d 4. sp 2 correct 5. sp 3 d 2 Explanation: The structure oF CH 2 O is C H H O · · · · There are 3 regions oF HED. This corre- sponds to sp 2 hybridization. 004 10.0 points Which oF the Following hybridizations is ac- ceptable? 1. sp 2 d 2. s 2 p 3. s 2 p 6 4. sp 3 d 2 correct 5. s 2 p 2 Explanation: In hybridization, UP TO one p orbital, three p orbitals and two d orbitals are com- bined. d orbitals are only used iF all three p orbitals are also used. 005 10.0 points Give the hybridization oF each central atom: nitrogen, middle carbon, right carbon. H N C HO C H H H b b
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shah (rps587) – Homework 4 – mcdevitt – (52365) 2 1. sp 3 , sp 3 , sp 3 2. sp , sp , sp 3. sp 2 , sp 2 , sp 2 4. sp 2 , sp , sp 2 5. sp , sp 3 , sp 3 6. sp 2 , sp 3 , sp 3 7. sp 2 , sp 2 , sp 3 correct 8. sp 3 , sp 2 , sp 3 Explanation:
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This note was uploaded on 04/16/2009 for the course CH 52365 taught by Professor Mcdevitt during the Spring '09 term at University of Texas.

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hw 4 - shah (rps587) Homework 4 mcdevitt (52365) This...

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