Chemistry 222 General Chemistry Problem Set 1 Answers

Chemistry 222 General Chemistry Problem Set 1 Answers -...

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Chemistry 222, section 500 Spring 2007 Polar Bonds and Molecules 1. Classify each of the following compounds as covalent or ionic: a. Br 2 covalent b. Mg 3 N 2 ionic c. N 2 O covalent d. SF 6 covalent e. LiF ionic Note: These answers can be determined simply by calculating the electronegativity difference between the two elements in each compound 2. Select the more polar bond in each of the following pairs, using your knowledge of electronegativity trends in the Periodic Table. a. C-C or C-O b. Si-S or Si-Cl c. P-O or P-S d. F-Cl or F-Br 3. Classify each of the following bonds as nonpolar covalent, polar covalent, or ionic: a. Si-Cl polar covalent b. C-C nonpolar covalent c. Na-Cl ionic d. C-H nonpolar covalent e. F-F nonpolar covalent f. C-N polar covalent g. N-F polar covalent 4. Predict the shape and polarity (polar or nonpolar) of each of the following molecules. Assume all bonds are polar. a. A central atom with two bonded atoms and one lone pair.
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Unformatted text preview: Shape is bent; molecule is polar b. A central atom bonded to two identical atoms and no lone pairs Shape is linear; molecule is nonpolar c. A central atom with three identical bonded atoms and one lone pair Shape is trigonal pyramidal; molecule is polar d. A central atom with four bonded atoms that are not identical and no lone pairs Shape is tetrahedral; molecule is polar e. A central atom with four identical bonded atoms and no lone pairs Shape is tetrahedral; molecule is nonpolar 5. Determine the shape and polarity (polar or nonpolar) for each of the following molecules. Note: Lone pairs are NOT shown. You must add them, if necessary. N F F F Si Br Br Br Br S O O C C H H C O Cl Cl Shape: Trigonal pyramid Tetrahedral Bent Linear Trigonal Planar Polarity: Polar Nonpolar Polar Nonpolar Polar...
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This note was uploaded on 07/14/2008 for the course CHEM 222 taught by Professor Mullen during the Spring '08 term at Texas A&M.

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Chemistry 222 General Chemistry Problem Set 1 Answers -...

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