Post on 27-Dec-2015
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