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1 | | The electron configuration of a Ni2+ ion is: |
| | A) | [Ar]4s23d8 |
| | B) | [Ar]4s23d6 |
| | C) | [Ar]3d8 |
| | D) | [Ar]3d6 |
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2 | | The Fe3+ ion has _____ electrons in 3d orbitals. |
| | A) | 6 |
| | B) | 5 |
| | C) | 4 |
| | D) | 3 |
| | E) | 2 |
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3 | | A ligand is: |
| | A) | a molecule or ion that has at least one lone pair of electrons |
| | B) | a nucleophile |
| | C) | a Lewis base |
| | D) | part of a coordination compound |
| | E) | All of the above |
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4 | | In K[Cu(CN)2], how many 3d electrons does the copper ion have? |
| | A) | 10 |
| | B) | 9 |
| | C) | 8 |
| | D) | 7 |
| | E) | 6 |
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5 | | Which of the following is a bidentate ligand? |
| | A) | cyanide ion |
| | B) | nitrite ion |
| | C) | ammonia |
| | D) | thiocyanate ion |
| | E) | ethylenediamine |
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6 | | The correct chemical formula for tetraamminecopper(II) chloride is: |
| | A) | [Cu(NH3)4Cl] |
| | B) | [Cu(NH3)4]Cl2 |
| | C) | [Cu(NH3)4]Cl3 |
| | D) | [Cu(NH3)4]Cl |
| | E) | [Cu(NH3)]Cl4 |
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7 | | The best name for K[Cr(NH3)2Cl2(CN)2] is: |
| | A) | potassium diamminedichlorodicyanochromate(III) |
| | B) | potassium diamminedichlorodicyanochromium(III) |
| | C) | potassium diamminedichlorochromatium(III) cyanide |
| | D) | potassium diamminedichlorochromate(II) cyanide |
| | E) | potassium diamminedichlorodicyanochromate(II) |
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8 | | Which of the following species could exist as a pair of isomers? |
| | A) | [Pt(NH3)3Cl]+ |
| | B) | [Fe(CN)6]3- |
| | C) | [Co(H2O)4Cl2]+ |
| | D) | [Pt(en)Cl2] |
| | E) | [Pt(NH3)Br3]- |
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9 | | Which of the following ligands is most likely to form a high spin octahedral complex with cobalt(II)? |
| | A) | CN- |
| | B) | NO2- |
| | C) | I- |
| | D) | CO |
| | E) | en |
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10 | | In the complex ion ML6n+, Mn+ has four d electrons and L is a weak field ligand. According to crystal field theory, the magnetic properties of this complex ion correspond to the presence of how many unpaired electrons? |
| | A) | 0 |
| | B) | 1 |
| | C) | 2 |
| | D) | 3 |
| | E) | 4 |
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11 | | Why are phosphates being eliminated from detergents? |
| | A) | Detergents with phosphates are less efficient cleansers. |
| | B) | By chelating Ca2+ ions, the phosphates allow more efficient cleansing. |
| | C) | Phosphates are important plant nutrients which increase algae growth and deplete oxygen. |
| | D) | None of the above. |
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12 | | The magnitude of crystal field splitting has a direct effect on the color of complex ions. |
| | A) | True |
| | B) | False |
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13 | | Place the ligands, CN-, Br-, H2O, and OH- in order from least to greatest according to their ability to split the d orbital energy level. |
| | A) | CN-, OH-, H2O, Br- |
| | B) | Br-, OH-, H2O, CN- |
| | C) | Br-, H2O, CN-, OH- |
| | D) | None of the above |
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14 | | Labile complexes.... |
| | A) | undergo rapid ligand exchange reactions. |
| | B) | exchange ligands slowly in reactions. |
| | C) | have large formation constants. |
| | D) | none of the above. |
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15 | | Coordination compounds are useful in: |
| | A) | biological organisms because of their color |
| | B) | industry due to their magnetic properties |
| | C) | biological organisms as ligand transporters |
| | D) | none of the above |
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