Finals1 - Part I Multiple Choice Concepts(4 points each Select the best answer and enter your choice on the cover sheet No partial credit 1 The

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Part I: Multiple Choice, Concepts (4 points each) Select the best answer and enter your choice on the cover sheet – No partial credit 1. The lewis formula for XeF 2 has how many lone pairs of electrons? a. 3 b. 7 c. 4 d. 9 e. 5 2. In the best set of resonance forms for permanganate there are ___ single bonds and _____ double bonds respectively around the central Mn. a. 1, 3 b. 2, 1 c. 2, 2 d. 1, 2 e. 3, 1 3. The total number of sigma bonds in the C 3 H 6 O is a. 7 b. 13 c. 9 d. 15 e. 11 4. Which of the following is INCORRECT about ClO 3 - a. The ion is polar. b. The best resonance form would have two double bonds to the oxygens. c. The ion is trigonal planar. d. The ion is trigonal pyramidal. e. The ion has one lone pair of electron on the central atom. 5. All of the following have a dipole moment except a. PH 3 b. SF 5 - c. SiF 2 H 2 d. BrF 4 - e. NCl 3
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Which of the following species is T-shaped? a. PF 3 b. SF 3 + c. SF 4 d. BH 3 e. IF 3 7. Which of the following orders is correct for electron affinity of Si, P, S, Cl, Ca? a. Cl<S<P<Si<Ca b. Ca<P<Si<S<Cl c. C<S<P<Si<Cl d. Ca<Si<P<S<Cl e. S<Ca<Cl<P<Si 8. Which of the following species has a non zero dipole moment? a. SO 3 -2 b. CH 3 + c. PH 3 d. BF 3 e. XeF 4 9. Which of the molecules would have the strongest bond? a. O
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This note was uploaded on 04/10/2010 for the course CHE 2a taught by Professor Tingguo during the Winter '08 term at UC Davis.

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Finals1 - Part I Multiple Choice Concepts(4 points each Select the best answer and enter your choice on the cover sheet No partial credit 1 The

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