Chem 2 M3 FA KEY

Chem 2 M3 FA KEY - and 14 6 Which of the following...

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Midterm 3 Exam, Form A, CHEM 002 Fall, 2007. (Chapters 12, 13 and 14) Name: _________________________ Date: ____________ 1) Which orbital designation listed below has 5 total nodes, 5 radial nodes and no angular nodes? a) 4d b) 6p c) 6s d) 5s e) Answer not given. 2) A hydrogen atom in its ground state (i.e. n=1) is excited when irradiated with monochromatic radiation whose frequency, ν , is 3.08x10 15 s -1 . Will this excitation cause the ground state electron to transition to the n=5 state? a) Yes b) No c) Not enough information given to answer question. 3) Which atom will be attracted most strongly to a magnetic field (i.e. greatest magnetism)? a) Li b) Ne c) N d) S e) B 4) What is the formal charge of nitrogen in the nitrite ion, NO 2 - ? a) -1 b) 0 c) 3 d) 1 e) 2 5) Which molecule listed below has the lowest bond energy for the H–C bond? a) H-CH 2 NH 2 b) H-CH 2 CH 2 OH c) H-CH 3 d) H-CH 2 OH e) H-CH 2 CH 2 Cl Page 1 of 2
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Midterm 3 Exam, Form A, CHEM 002 Fall, 2007.
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Unformatted text preview: (Chapters 12, 13 and 14) 6) Which of the following electronic configurations represents Al +3 in an excited state? a) 1s 2 , 2s 2 , 2p 5 , 3s 1 b) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 4s 1 c) 1s 2 , 2s 2 , 2p 4 , 3s 1 d) 1s 2 , 2s 2 , 2p 6 e) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 1 7) Which atom has the highest first ionization energy? a) Si b) S c) P d) Al e) As 8) Using the VSEPR model, what is the electron pair arrangement for IF 3 ? a) trigonal planar b) T-shape c) trigonal bipyramidal d) bent e) tetrahedral 9) Using the MO model, which of the following diatomic species will have the strongest bond? a) O 2-b) O 2 c) N 2 + d) F 2-e) C 2 10) What is the hybridization of carbon in methanal, H 2 CO, and how many σ bond(s) and π bond(s) are present in the molecule, respectively? a) sp 3 , 2, 1 b) sp 2 , 3, 1 c) sp, 1, 3 d) p, 1, 2 e) s, 2, 2 Page 2 of 2...
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This note was uploaded on 02/27/2010 for the course CHEM 1132 taught by Professor Cole/clark during the Spring '08 term at UCM.

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Chem 2 M3 FA KEY - and 14 6 Which of the following...

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