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  • Topic: Ligand, Coordination chemistry, Lone pair
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CHAPTER-23 HW.

Rahaf AlBathi 121114
Question 1
The electron configuration of a Ni2+ ion is:
| A) [Ar]4s23d8|
| B) [Ar]4s23d6|
| C) [Ar]3d8|
| D) [Ar]3d6|

Question 2
The Fe3+ ion has _____ electrons in 3d orbitals.
| A) 6 |
| B) 5 |
| C) 4 |
| D) 3 |
| E) 2 |

Question 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 |

Question 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 |

Question 5
Which of the following is a bidentate ligand?
| A) cyanide ion |
| B) nitrite ion |
| C) ammonia |
| D) thiocyanate ion |
| E) ethylenediamine |
Question 6
The correct chemical formula for tetraaminecopper(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|

Question 7
The best name for K[Cr(NH3)2Cl2(CN)2] is:
| A) potassium diaminedichlorodicyanochromate(III) |
| B) potassium diaminedichlorodicyanochromium(III) |
| C) potassium diaminedichlorochromatium(III) cyanide |
| D) potassium diaminedichlorochromate(II) cyanide |
| E) potassium diaminedichlorodicyanochromate(II) |

Question 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]-|

Question 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 |

Question 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...
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