#2 - Spring 07

#2 - Spring 07 - CHE 131 Exam 2, Spring 2007 Multiple...

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CHE 131 Exam 2, Spring 2007 Multiple Choice, 4 points each Bubble in the letter of the one choice that best completes the statement or answers the question. No credit will be given for multiple answers. 1. The electron configuration for the element with atomic number 113 is: A. [Rn] 7s 2 7f 14 7d 10 7p 1 B. [Rn] 7s 2 5f 14 7d 10 7p 1 C. [Rn] 7s 2 6d 10 7p 1 D. [Rn] 7s 2 5f 14 6d 10 7p 1 E. none of these 2. What is the total number of electrons that can be accommodated in the level corresponding to n = 5? A. 2 B. 8 C. 18 D. 32 E. 50 3. How many of the following molecules or ions are linear? N H 3 NH 4 + HCN CO 2 NO 2 A. 0 B. 1 C. 2 D. 3 E. 4 4. Place the elements S, Cl, and F in order of increasing ionization energy. A. S, Cl, F B. Cl, F, S C. F, S, Cl D. F, Cl, S E. S, F, Cl 5. Which of the following molecules do not contain a carbon atom that is sp 2 hybridized? I. C 2 H 4 II. CO 2 III. C 2 H 6 A. I B. II C. III D. I and II E. II and III
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6. What type of structure does the XeOF 2 molecule have? A. pyramidal B. tetrahedral C. T-shaped D. trigonal planar E. octahedral 7. The electron configuration of Cr 3+ is A. [Ar]4s 2 3d 1 B. [Ar]4s 1 3d 2 C. [Ar]3d 3 D. [Ar]4s 2 3d 4 E. none of these 8. The hybridization of the central atom in KrF 4 O is: A. sp B. sp 2 C. sp 3 D. dsp 3 E. d 2 sp 3 9. Given the following electronegativity values, which of the following molecules is the most polar?
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#2 - Spring 07 - CHE 131 Exam 2, Spring 2007 Multiple...

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