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Problem Set 9

Problem Set 9 - Name Section Rec TA Side 1 of 3 Ch 1a...

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Name Ch 1a, Problem Set Nine Section Side 1 of 3 Due Friday, Dec. 2, 2005 Rec TA at 4 PM in the Drop Box + - + - + - + - + - + - + - + - + - + - + - + - + Problems one and four are designated ( ) as “no collaboration” problems. 1. (20 Points) Determine the oxidation number of the metal in each of the following complexes: a. [PtCl 6 ] 2- b. [PtCl 4 ] 2- c. Mn(CO) 5 Cl d. [Rh(SO 4 )(NH 3 ) 5 ] 1+ 2. (40 Points, 10 Each) In lecture you learned of three different forms of packing in crystals which have a 1:1 stoichiometry, face centered cubic, body centered cubic, and the zinc blende structure. Crystals arrange into these structures based on the sizes of the cations and anions involved. I. Determine the packing efficiency for each of these three structures as a function of a cationic radius r c and an anionic radius r a . You may treat these ions as hard spheres to simplify the problem. II. Plot these three packing efficiencies as a function of r c for structures involving a chloride anion. You need only plot the efficiency from r c = 0 to

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Problem Set 9 - Name Section Rec TA Side 1 of 3 Ch 1a...

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