04CHM114_ExtraProbsExam2

04CHM114_ExtraProbsExam2 - A. 3 B. 1 C. D. 2 E. depends on...

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Below are extra Practice questions and text problems, for the coming exam. Edition 9. 9.51, 9.53, 9.55, 9.57, 9.11, 9.25 Edition 8 9.47, 9.49, 9.51, 9.54, 9.13, 9.23 Multiple Choice questions. 18 . Which of the following molecules will be stable while violating the octet rule of "good" Lewis structures? A. CCl 4 B. PCl 5 C. CO 2 D. OF 2 E. COCl 2 19 . Which of the following molecules will be best described as having the shape of a trigonal pyramid? A. BF 3 B. P 4 C. CH 4 D. NH 3 E. SF 6 20 . In order to understand the properties of metals it is essential to understand something of molecular orbitals. In order to understand why the molecular oxygen is paramagnetic it is also necessary to under stand molecular orbitals. In molecular orbital theory, the number of orbitals with principal quantum number n = 1, in a diatomic molecule is
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Unformatted text preview: A. 3 B. 1 C. D. 2 E. depends on the bonded atoms 21 . In the He 2 + molecule ion, the number of electrons in antibonding orbitals is A. 1 B. 2 C. 1/2 D.-1/2 E. 7 22 . In the ground state of the cluster (Li) 10 the number of electrons in bonding orbitals with principal quantum no 2 is A. 2 B. 4 C. 6 D. 8 E. 10 23. Which of the following "electron cloud" pictures best illustrates the distribution of electrons in a 1s bonding orbital? 24. An anti-bonding -orbital ( *) contains a maximum of ___________electrons. A. 1 B. 2 C. 4 D. 6 E. 8 25 According to the molecular orbital theory for diatomic molecules, how many electrons with unpaired spins occur in the oxygen molecule? A. B. 1 C. 2 D. 3 E. 4...
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04CHM114_ExtraProbsExam2 - A. 3 B. 1 C. D. 2 E. depends on...

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