classes_Spring08_172ID39_ProblemSet1

classes_Spring08_172ID39_ProblemSet1 - a) a tetrahedral d 6...

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1 Chemistry 172/273 Problem Set #1 (Due Friday, April 4, in class) Spring 2007 Note : Do not use a pencil. Use black ink only. Try to write as neatly as possible. If I don’t understand your handwriting, you will not get any points. 1. Predict and sketch the structure of the (as yet) hypothetical ion IF 3 2- . 2 . Sketch the most likely structure of PCl 3 Br 2 . 3 . Give Lewis dot structures and sketch the shape of the following: a. SeCl 4 b. I 3 - c. PSCl 3 d. IF 4 - e. PH 2 - f. TeF 4 2- g. N 3 - h. SeOCl 4 i. PH 4 + j. NO - (considering N the central atom) 4 . Give structures for: a. bis(en)Co(III)- μ -imido- μ -hydroxobis(en)Co(III) ion b. diaaquadiiododinitrito Pd(IV) (all isomers) 5 . Sketch all isomers of the following. Indicate clearly each pair of enantiomers. a. [Pt(NH 3 ) 3 Cl 3 ] + b. [Co(NH 3 ) 2 (H 2 O) 2 Cl 2 ] + c. [Co(NH 3 ) 2 (H 2 O) 2 BrCl] + d. [Cr(H 2 O) 3 BrClI] e. (Pt(en) 2 Cl 2 ] 2+ f. [Cr( o -phen)(NH 3 ) 2 Cl 2 ] + g. [Pt(bipy)BrCl] 2+ 6 . Give structural formulas for the following: a. cis-diamminebromochloroplatinum(II) b. tri- μ -carbonylbis(tricarbonyliron(0)) 7 . Predict the number of unpaired electrons for each of the following:
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Unformatted text preview: a) a tetrahedral d 6 ion. b) [Co(H 2 O) 6 ] 2+ c) [Cr(H 2 O) 6 ] 3+ 2 d) a square planar d 7 e) a compound with a magnetic moment of 5.1 Bohr magnetons 8 . Determine which of the following is paramagnetic, explain your choice, and estimate its magnetic moment. a) [Fe(CN) 6 ] 4-b) [Co(H 2 O) 6 ] 3+ c) [CoF 6 ] 3-d) [RhF 6 ] 3-9 . A compound with the empirical formula Fe(H 2 O) 4 (CN) 2 has a magnetic moment corresponding to 2 2/3 unpaired electrons per iron. How is this possible? 10 . What are the possible magnetic moments of Co(II) in octahedral, tetrahedral, and square planar complexes? 11 . The most common source of mercury is cinnabar (HgS), whereas Zn and Cd, in the same group, occur as sulfide, carbonate, silicate, and oxide. Why? 12 . CsI is much less soluble in water than CsF; LiF is much less soluble than LiI. Why?...
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This note was uploaded on 10/12/2009 for the course CHEM C172 taught by Professor Zink,j during the Spring '08 term at UCLA.

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classes_Spring08_172ID39_ProblemSet1 - a) a tetrahedral d 6...

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