1441test4 - 1441 Test Four Chapters 8 & 9 Zumdahl...

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Website: http://dipowell1.home.mindspring.com Chapter 8: Bonding, General Concepts 1. The correct statement is: (a) water is linear (b) the molecule ClO 2 cannot be accurately described by Lewis structure consistent with the octet rule (c) the bonds in LiF have more covalent character than those in F 2 (d) all of these are false 2. How many of the following molecules or ions are linear? NH 3 , NH 4 + , HCN, CO 2 , NO 3 - (a) 0 (b) 1(c) 2 (d) 3 (e) 4 3. Which of the following species has a trigonal bipyramidal structure? (a) NH 3 (b) IF 5 (c) I 3 - (d) PCl 5 (e) none of these 4. What is the molecular structure of XeF 4 ? (a) linear (b) tetrahedral (c) square planar (d) octahedral 5. Give an example of each: Polar Covalent Compound, 100% Covalent Compound, Ionic Compound. What one factor causes the bonding type to change 6. Which contains the most polar bond: HBr, HCl, or HF? 7. As the bond order for a carbon-carbon bond increases, which one of the following decreases? (a) number of electrons between the carbon atoms (b) bond energy (c) bond length (d) number of pi bonds (e) none of these 8. Which of the following groups contain no ionic compounds? (a) HCN, NO 2 , Ca(NO 3 ) 2 (b) PCl 5 , LiBr, SF 4 (c) KOH, CCl 4 , SF 4 (d) NaH, CaF 2 , NaNH 2 (e) CHO 2 , H 2 S, NH 3 9. Using the concept of formal charge, which electron dot formula most accurately describes the bonding of CS 2 ? C
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This note was uploaded on 10/13/2009 for the course CHEM 1441 taught by Professor Tanizaki during the Spring '08 term at UT Arlington.

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1441test4 - 1441 Test Four Chapters 8 & 9 Zumdahl...

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