152sample_exam_Exam_1_W02

152sample_exam_Exam_1_W02 - CHEMISTRY 152A Winter '02 Name:...

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CHEMISTRY 152A HOUR EXAM I Winter '02 Friday, February 1, 2002 Name: ____________________ TA Section: __________________ Student Number: ____________ TA Name: ____________________ Score (page) 1 ________ 2 ________ GOOD LUCK! 3 ________ 4 ________ SHOW YOUR WORK IN THE SPACE PROVIDED 5 ________ (points as indicated, total = 100 pts) Total ________ 1. (4) A diatomic molecule can have zero % ionic character (have purely non- polar covalent bonding), but cannot have 100% ionic character. Why? 2. (5) Give the Lewis dot structures for calcium (Ca) and fluorine (F) atoms and the Lewis dot structure for the ionic compound formed from these two elements. 3. (5) Indicate the bonding type (non-polar covalent, polar covalent, ionic, metallic) for each of the following: (a) Cd (b) CsBr (c) N 2 (d) HF (e) S 8
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4. (4) Arrange the following bonds in terms of increasing bond strength: C - F C-Br C - Cl C-I 5. (8) Draw the Lewis dot structure for the most important resonance form of the cyanate anion NCO -
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This note was uploaded on 05/17/2008 for the course CHEM 142 taught by Professor Zoller,williamh during the Spring '07 term at University of Washington.

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152sample_exam_Exam_1_W02 - CHEMISTRY 152A Winter '02 Name:...

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