Chem 2 MIDTERM 3 Form C Spring 09

Chem 2 MIDTERM 3 Form C Spring 09 - Midterm Exam 3 Form A,...

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Midterm Exam 3 Form A, CHEM 002 Spring, 2008. (Chapters 12, 13 and 14) Name: _________________________ Date: ____________ 1) Which series below represents the four quantum numbers (i.e. n, l, m l and m s , respectively) of the valence electron in Cs? a) 6, 0, 0, 0 b) 6, 0, 1, + ½ c) 6, 1, 1, - ½ d) 6, 0, 0, + ½ e) Answer not given. 2) What is E for the electron transition from n = 3 to the n = 1 state in a hydrogen atom, and is this an absorption or an emission process? a) -1.94x10 -18 J, emission b) -1.94x10 -18 J, absorption c) 2.18x10 -18 J, emission d) 7.27x10 -19 J, absorption 3) Which diatomic listed below will be attracted most strongly to a magnetic field (i.e. greatest magnetism)? a) C 2 b) N 2 c) He 2 d) O 2 e) F 2 4) Which orbital is the non-bonding electron pair on the sulfur atom in sulfur dioxide, SO 2 , residing? a) sp 2 b) sp c) sp 3 d) p e) s 5) Which molecule listed below will exhibit the greatest molecular dipole, μ ? a) CH 3 NH 2 b) CH 3 Cl c) CH 4 d) CH 3 OH e) CH 3 F Page 1 of 2
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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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This note was uploaded on 06/24/2010 for the course CHEM 002 taught by Professor Vidensik during the Spring '10 term at UC Merced.

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Chem 2 MIDTERM 3 Form C Spring 09 - Midterm Exam 3 Form A,...

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