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[Co(en)(NH 3 ) 2 (OH) 2 ]Cl / +3 K 2 [CuCl 4 ] / +2 K 4 [Fe(CN) 6 ] / +3 [Co 2 (CO) 8 ] / 0

In which one of the following is the oxidation number of the transition metal incorrect? Complex Species / Oxidation Number of Transition Metal. [Co(en)(NH 3 ) 2 (OH) 2 ]Cl / +3 K 2 [CuCl 4 ] / +2 K 4 [Fe(CN) 6 ] / +3 [Co 2 (CO) 8 ] / 0 [Pt(NH 3 ) 2 (OH 2 )Cl] 3 PO 4 / +2.

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[Co(en)(NH 3 ) 2 (OH) 2 ]Cl / +3 K 2 [CuCl 4 ] / +2 K 4 [Fe(CN) 6 ] / +3 [Co 2 (CO) 8 ] / 0

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  1. In which one of the following is the oxidation number of the transition metal incorrect? Complex Species / Oxidation Number of Transition Metal • [Co(en)(NH3)2(OH)2]Cl / +3 • K2[CuCl4] / +2 • K4[Fe(CN)6] / +3 • [Co2(CO)8] / 0 • [Pt(NH3)2(OH2)Cl]3PO4 / +2

  2. Which is not one of the families (Groups) of metals that form soluble ammine complexes with excess aqueous NH3? • zinc • copper • nickel • iron • cobalt

  3. Ligands may bond to a metal through one or more donor atoms. Which term below incorrectly designates the number of donor atoms given? • 1 - monodentate • 2 - bidentate • 3 - tridentate • 4 - tetradentate • 6 - hexadentate

  4. Which ligand formula is incorrectly matched with its name as a ligand? Ligand / Name • SO42- / sulfato • CO32- / carbonato • S2O32- / sulfido • F- / fluoro • O2- / oxo

  5. Which of the following names for metals in complex anions is derived from the Latin stem? • zincate • platinate • ferrate • chromate • cobaltate

  6. Below is a list of formulas for complex compounds; each is matched with its name. One formula - name combination contains an error. Which one? Formula / Name • [Cr(NH3)3(OH)3] / triamminetrihydroxochromium(III) • K3[FeF6] / potassium hexafluoroferrate(III) • Na[Cu(CN)2] / sodium dicyanocuprate(II) • [Co(en)3](NO3)3/ tris(ethylenediamine)cobalt(III) nitrate • Na2[SnCl6] / sodium hexachlorostannate(IV)

  7. Below is a list of formulas for complex compounds and ions; each is matched with its name. One formula - name combination contains an error. Which one? Formula / Name • [AlF6]3- / hexafluoroaluminate ion • [PtCl4]2- / tetrachloroplatinate(II) ion • K3[SnCl6] / potassium hexachlorostannate(IV) • Mg[PdCl6] / magnesium hexachloropalladate(IV) • [Co(NH3)4Cl2]3PO4 / tetraamminedichlorocobalt(III) phosphate

  8. Below is a list of formulas for complex compounds and ions; each is matched with its name. One formula - name combination contains an error. Which one? Formula / Name • [Ni(NH3)6]2+ / hexaamminenickel(II) ion • [Co(NH3)3(H2O)2Cl]2SO4 / triamminediaquachlorocobalt(II) sulfate • K[Pt(NH3)Cl6] / potassium amminepentachloroplatinate(IV) • [Sn(C2O4)3]2- / tris(oxalato)stannate(IV) ion • [Co(NH3)4Cl2]3AsO4 / tetraamminedichlorocobalt(III) arsenate

  9. Below is a list of complex ions and their structures. One pair is incorrectly matched. Which pair? Complex Ion / Structure • [Co(en)3] 3+ / octahedral • [Cu(en)2] 2+ / square planar • [Co(EDTA)] - / tetrahedral • [Ni(CN)4] 2- / square planar • [Cd(CN)4] 2-/font> / tetrahedral

  10. Below is a list of complex species and their structures. One pair is incorrectly matched. Which pair? Complex Species / Structure • [Ni(CO)4] / square pyramidal • [Co(OH2)6] 2+ / octahedral • [Ag(NH3)2] + / linear • [Hg(CN)4] 2- / tetrahedral • [Zn(NH3)4] 2+ / tetrahedral

  11. Below is a list of complex ions and their structures. One pair is incorrectly matched. Which pair? Complex Ion / Structure • [AgCl2] - / linear • [CuCl2] - / angular • [ZnCl4] 2- / tetrahedral • [Cu(NH3)4] 2+ / square planar • [Zn(OH2)6] 2+ / octahedral

  12. {image} {image} {image} {image} Which of the above structures has each of the three pairs of like ligands in the cis position to each other? • I • II • III • II and III • IV

  13. Which of the following answers contains all of the true statements concerning the tris(ethylenediamine)cobalt(III) ion, [Co(en)3] 3+ and no false statements? I. Each bidentate ethylenediamine ligand bonds in cis positions. II. The [Co(en)3] 3+exists in the form of a pair of nonsuperimposable mirror images. III. The coordination number of the Co metal ion is 3. IV. The [Co(en)3] 3+exists as a pair of optical isomers. V. The two optical isomers each rotate a plane of polarized light by equal amounts but in opposite directions. • I, II and III • I, III and V • IV and V • I, II, III, IV and V • I, II, IV and V

  14. If cobalt(II) nitrate is obtained by crystallization from aqueous solution, how many water < molecules should be associated with each formula unit of cobalt(II) nitrate in the solid state? • 7 • 2 • 6 • 4 • 9

  15. Which one of the following octahedral configurations has a low spin configuration? • d3 • d9 • d8 • d 5 • d2

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