Midterm 2 2009 - Name: _ Student Number: _ Seat Number: _...

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Name: ________________________ Seat Number: _________ Student Number: ___________________ CHM 2311 Midterm 2 March 26, 2009 You have 80 minutes to complete this exam. Please read the questions carefully. There some useful data and a periodic table on the last 2 pages of the exam. Please write legibly and show your work to receive credit for your answers. Partial marks may in some cases be awarded for partially correct work. Question Mark 1 /10 2 / 7 3 / 3 4 /3 5 / 4 6 / 11 7 /2 8 /10 Total /50
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2 1. ( 10 points) Determine the point group for each of the following molecules/shapes. A. B. C. Point Group: A. B. C. D. E. F. SF 5 Cl Point Group: D. E. F. G. H. NO 3 - I. H 3 O + Point Group: G. H. I. J. PO 4 3- CN NC CN NC C C O O O O H H B N B N B N H H H H H H C C C C C H H H H H H O
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3 Point Group: J.
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4 2. (6 points; ½ point per blank) Determine the irreducible representations (i.e. set of characters) corresponding to the p y , the d xy , and the d z 2 orbitals on the central atom of a molecule in the D 2 point group. Please write your answers in the character table below. (It is not necessary to show your derivations.
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Midterm 2 2009 - Name: _ Student Number: _ Seat Number: _...

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