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Unformatted text preview: Midterm Exam 3 Form A, CHEM 002 Spring, 2008. (Chapters 12, 13 and 14) 6) Which of the following has the excited electronic configuration: [Ne] 3s 2 , 3p 5 , 4s 1 ? a) Cl b) S-2 c) Br d) Al +3 e) F 7) Using the MO energy level diagram of CN-, predict if the C-N bond will become weaker or stronger when CN-is excited to its’ first excited state. a) Weaker b) Stronger c) No effect will be observed 8) What is the bond order of N 2 using the Lewis structure approach, and does it agree with the bond order calculated using the MO model? a) 2.0, yes b) 3.0, no c) 3.0, yes d) 2.0, no e) 2.5, yes 9) Based upon the VSEPR model, what is the molecular shape of NH 3 ? a) trigonal planar b) T-shape c) trigonal pyramidal d) bent e) tetrahedral 10) Using the MO model to predict the magnetism of CN-, will it be… a) Paramagnetic b) Diamagnetic c) Answer not given. Page 2 of 2...
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