#Chem 162-2008 homework 9th week

#Chem 162-2008 homework 9th week - Chem 162-2008 Hill &...

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th Week Homework Coordination Chemistry 51. What is the coordination number of the central metal atom in (a) [PtCl 3 (NH 3 ) 3 ] + ; Three contact sites from Cl and three contact sites from NH 3 = coordination number of 6. (b) [Fe(SCN) 2 ] + ; Two contact sites = coordination number of 2. (c) Cu(en) 2 ] 2+ ? Each ethylenediamine has two contact sites; therefore two ethylenediamines have four contact sites = coordination number of 4. 55. Indicate the oxidation number of the central metal atom in (a) [NiBr 4 ] 2- ; X + (4 x -1) = -2 X = +2 (b) [FeF 5 (H 2 O)] 2- ; X + (5 x -1) + (1 x 0) = -2 X = +3 (c) [PtCl 2 (NH 3 ) 4 ] 2+ ; X + (2 x -1) + (4 x 0) = +2 X = +4 (d) [Fe(CO) 5 ]. X + (5 x 0) = 0 X = 0 Nomenclature 57. Name the following complex ions. (a) [Zn(NH 3 ) 6 ] 2+ hexaaminezinc(II) ion (b) [FeCl 4 ] 2- tetrachloroferrate(II) ion (c) [PtCl 2 (NH 3 ) 4 ] 2+ tetraamminedichloroplatinum(IV) ion (d) [Co(en) 3 ] 3+ tris(ethylenediamine)cobalt(III) ion 59. Write the formula for each of the following. (a) hexafluorocobaltate(III) ion [CoF 6 ] 3- (b) tetraaquadichlorochromium(III) ion [Cr(H 2 O) 4 Cl 2 ] + The Solutions Manual has [CrCl 2 (H 2 O) 4 ] + ; I don’t know why their answer is better than mine, but I’m not
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#Chem 162-2008 homework 9th week - Chem 162-2008 Hill &...

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