In which one of the following is the oxidation number of the transition metal incorrect? Complex Species / Oxidation Number of Transition Metal

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1. [Co(en)(NH3)2(OH)2]Cl / +3

2. K2[CuCl4] / +2

3. K4[Fe(CN)6] / +3

4. [Co2(CO)8] / 0

5. [Pt(NH3)2(OH2)Cl]3PO4 / +2

Which is not one of the families (Groups) of metals that form soluble ammine complexes with excess aqueous NH3?

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1. zinc

2. copper

3. nickel

4. iron

5. cobalt

Ligands may bond to a metal through one or more donor atoms. Which term below incorrectly designates the number of donor atoms given?

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1. 1 - monodentate

2. 2 - bidentate

3. 3 - tridentate

4. 4 - tetradentate

5. 6 - hexadentate

Which ligand formula is incorrectly matched with its name as a ligand? Ligand / Name

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1. SO42- / sulfato

2. CO32- / carbonato

3. S2O32- / sulfido

4. F- / fluoro

5. O2- / oxo

Which of the following names for metals in complex anions is derived from the Latin stem?

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1. zincate

2. platinate

3. ferrate

4. chromate

5. cobaltate

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

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1. [Cr(NH3)3(OH)3] / triamminetrihydroxochromium(III)

2. K3[FeF6] / potassium hexafluoroferrate(III)

3. Na[Cu(CN)2] / sodium dicyanocuprate(II)

4. [Co(en)3](NO3)3/ tris(ethylenediamine)cobalt(III) nitrate

5. Na2[SnCl6] / sodium hexachlorostannate(IV)

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

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1. [AlF6]3- / hexafluoroaluminate ion

2. [PtCl4]2- / tetrachloroplatinate(II) ion

3. K3[SnCl6] / potassium hexachlorostannate(IV)

4. Mg[PdCl6] / magnesium hexachloropalladate(IV)

5. [Co(NH3)4Cl2]3PO4 / tetraamminedichlorocobalt(III) phosphate

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

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1. [Ni(NH3)6]2+ / hexaamminenickel(II) ion

2. [Co(NH3)3(H2O)2Cl]2SO4 / triamminediaquachlorocobalt(II) sulfate

3. K[Pt(NH3)Cl6] / potassium amminepentachloroplatinate(IV)

4. [Sn(C2O4)3]2- / tris(oxalato)stannate(IV) ion

5. [Co(NH3)4Cl2]3AsO4 / tetraamminedichlorocobalt(III) arsenate

Below is a list of complex ions and their structures. One pair is incorrectly matched. Which pair? Complex Ion / Structure

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1. [Co(en)3] 3+ / octahedral

2. [Cu(en)2] 2+ / square planar

3. [Co(EDTA)] - / tetrahedral

4. [Ni(CN)4] 2- / square planar

5. [Cd(CN)4] 2-/font> / tetrahedral

Below is a list of complex species and their structures. One pair is incorrectly matched. Which pair? Complex Species / Structure

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1. [Ni(CO)4] / square pyramidal

2. [Co(OH2)6] 2+ / octahedral

3. [Ag(NH3)2] + / linear

4. [Hg(CN)4] 2- / tetrahedral

5. [Zn(NH3)4] 2+ / tetrahedral

Below is a list of complex ions and their structures. One pair is incorrectly matched. Which pair? Complex Ion / Structure

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1. [AgCl2] - / linear

2. [CuCl2] - / angular

3. [ZnCl4] 2- / tetrahedral

4. [Cu(NH3)4] 2+ / square planar

5. [Zn(OH2)6] 2+ / octahedral

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1. I

2. II

3. III

4. II and III

5. IV

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.

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1. I, II and III

2. I, III and V

3. IV and V

4. I, II, III, IV and V

5. I, II, IV and V

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?

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1. 7

2. 2

3. 6

4. 4

5. 9

Which one of the following octahedral configurations has a low spin configuration?

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1. d 3

2. d 9

3. d 8

4. d 5

5. d 2