Question 1

Which statement below about ligands that form coordination complexes with transition metals is false?

Accepted Answer

A)  A ligand that attaches itself to a metal ion is acting as a Lewis acid.
B)  Neutral molecules can function as ligands and can form coordination complexes with transition metal ions.
C)  Anions can function as ligands and can form coordination complexes with transition metal ions.
D)  The ligand in a coordination complex contains a particular atom which functions as the donor atom.
E)  The bond between the ligand and the transition metal ion in a coordination complex is a coordinate covalent bond.F) C) and D)
G) C) and E)

Question 2

Write the correct name for the metal complex Na[Co(NO2)6].

Accepted Answer

sodium hex...

Question 3

In the coordination complex [Co(NH3)2(H2O)2Cl2]+, the coordination number and oxidation number of the central atom are ________.

Accepted Answer

Coordinati...

Question 4

The compound, (NH4) 3[FeF6], is named

Accepted Answer

A)  ammonium hexafluoroiron(III) .
B)  ammonium hexafluoroferrate(III) .
C)  ammonium iron(III) hexafluoride.
D)  hexafluoroiron(III) ammonium.
E)  triammonium hexafluoroiron(III) .F) C) and D)
G) A) and E)

Question 5

All ligands with two donor atoms are bidentate ligands.

Accepted Answer

A) True 
 B)False

Question 6

A Mo2+ ion has ________ 4d electrons.

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) All of the above
G) B) and D)

Question 7

The name for the transition metal complex [Fe(CN) 6]3- is

Accepted Answer

A)  hexacyano ferrate(III) .
B)  hexacyanoiron(II) .
C)  iron(III) hexacyanide.
D)  ferrous cyanide.
E)  ferric cyanide.F) A) and B)
G) B) and E)

Question 8

The following order is observed in the spectrochemical series for the ligands: CN- > NO2- > en > NH3 > H2O > C2O42- > OH- > F- > Cl- > Br- > I- Cr(CN) 63- and Co(CN) 63- are both negatively charged coordination complexes. Which statement describes the magnetic properties of the complexes?

Accepted Answer

A)  Cr(CN) 63- and Co(CN) 63- are both diamagnetic.
B)  Cr(CN) 63- is diamagnetic while Co(CN) 63- is paramagnetic.
C)  Cr(CN) 63- is paramagnetic while Co(CN) 63- is diamagnetic.
D)  Both complex ions are paramagnetic, but Cr(CN) 63- has a larger number of unpaired electrons than Co(CN) 63- hence its paramagnetism is more pronounced.
E)  Both complex ions are paramagnetic, but Co(CN) 63- has a larger number of unpaired electrons than (CN) 63- hence its paramagnetism is less pronounced.F) None of the above
G) C) and D)

Question 9

Which of these complex ions would absorb light with the longest wavelength?

Accepted Answer

A)  [Co(H2O) 6]2+
B)  [Co(NH3) 6]2+
C)  [CoF6]4-
D)  [Co(CN) 6]4-
E)  [Co(en) 6]2+F) A) and C)
G) A) and D)

Question 10

The ethylenediamine molecule (en), functions as a bidentate ligand and forms a coordination complex with cobalt: [Co(en)2(H2O)2]3+. Assign a coordination number and a charge to the cobalt ion in this coordination complex.

Accepted Answer

Question 11

A compound contains a transition metal coordination complex. This coordination complex consists of one iron(III) ion with 3 ammonia molecules, one ethylenediamine (en) molecule, and one cyanide ion attached as ligands. Which formula correctly describes a compound that would fit the description?

Accepted Answer

A)  K4[FeCN(NH3) 3(en) 2]
B)  K2[FeCN(NH3) 3(en) ]
C)  [Fe(CN) 2(NH3) 5(en) 2](SO4) 2
D)  [FeCN(NH3) 3(en) 2]SO4
E)  [Fe(en) CN(NH3) 3]Cl3F) A) and B)
G) A) and E)

Question 12

The correct name for the compound, [CrCl2(en) 2]2C2O4, is

Accepted Answer

A)  dichlorobis(ethylenediamine) chromium(III) oxalate.
B)  bis(ethylenediamine) dichlorochromate(III) oxalate.
C)  dichlorobis(ethylenediamine) oxalatochromium(III) .
D)  dichlorobis(ethylenediamine) oxalatochromate(III) .
E)  bis(dichlorobis(ethylenediamine) chromium(III) ) oxalate.F) A) and B)
G) B) and C)

Question 13

Which complex-[Cr(H2O)6]2+ or [Cr(H2O)6]3+-has the greatest crystal field splitting, and why?

Accepted Answer

The 3+ species has the greater...

Exam 22: Metal Complexes

The compound, (NH₄) ₃[FeF₆], is named

Correct Answer
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The correct name for the compound, [CrCl₂(en) ₂]₂C₂O₄, is

Correct Answer
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Which complex-[Cr(H₂O)₆]²⁺ or [Cr(H₂O)₆]³⁺-has the greatest crystal field splitting, and why?

Correct Answer
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The 3+ species has the greater...
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In the coordination complex [Co(NH₃)₂(H₂O)₂Cl₂]⁺, the coordination number and oxidation number of the central atom are ________.

Correct Answer
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Coordinati...
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A compound contains a transition metal coordination complex. This coordination complex consists of one iron(III) ion with 3 ammonia molecules, one ethylenediamine (en) molecule, and one cyanide ion attached as ligands. Which formula correctly describes a compound that would fit the description?

Correct Answer
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Write the correct name for the metal complex Na[Co(NO₂)₆].

Correct Answer
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sodium hex...
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The ethylenediamine molecule (en), functions as a bidentate ligand and forms a coordination complex with cobalt: [Co(en)₂(H₂O)₂]³⁺. Assign a coordination number and a charge to the cobalt ion in this coordination complex.

Correct Answer
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Which of these complex ions would absorb light with the longest wavelength?

Correct Answer
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A Mo²⁺ ion has ________ 4d electrons.

Correct Answer
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Which statement below about ligands that form coordination complexes with transition metals is false?

Correct Answer
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The name for the transition metal complex [Fe(CN) ₆]^3- is

Correct Answer
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All ligands with two donor atoms are bidentate ligands.

Correct Answer
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Exam 22: Metal Complexes

The compound, (NH4) 3[FeF6], is named

Correct AnswerverifiedShow Answer

The correct name for the compound, [CrCl2(en) 2]2C2O4, is

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Which complex-[Cr(H2O)6]2+ or [Cr(H2O)6]3+-has the greatest crystal field splitting, and why?

Correct AnswerverifiedThe 3+ species has the greater...View AnswerShow Answer

In the coordination complex [Co(NH3)2(H2O)2Cl2]+, the coordination number and oxidation number of the central atom are ________.

Correct AnswerverifiedCoordinati...View AnswerShow Answer

A compound contains a transition metal coordination complex. This coordination complex consists of one iron(III) ion with 3 ammonia molecules, one ethylenediamine (en) molecule, and one cyanide ion attached as ligands. Which formula correctly describes a compound that would fit the description?

Correct AnswerverifiedShow Answer

Write the correct name for the metal complex Na[Co(NO2)6].

Correct Answerverifiedsodium hex...View AnswerShow Answer

The ethylenediamine molecule (en), functions as a bidentate ligand and forms a coordination complex with cobalt: [Co(en)2(H2O)2]3+. Assign a coordination number and a charge to the cobalt ion in this coordination complex.

Correct AnswerverifiedShow Answer

Which of these complex ions would absorb light with the longest wavelength?

Correct AnswerverifiedShow Answer

A Mo2+ ion has ________ 4d electrons.

Correct AnswerverifiedShow Answer

Which statement below about ligands that form coordination complexes with transition metals is false?

Correct AnswerverifiedShow Answer

The name for the transition metal complex [Fe(CN) 6]3- is

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All ligands with two donor atoms are bidentate ligands.

Correct AnswerverifiedShow Answer

The following order is observed in the spectrochemical series for the ligands: CN- > NO2- > en > NH3 > H2O > C2O42- > OH- > F- > Cl- > Br- > I- Cr(CN) 63- and Co(CN) 63- are both negatively charged coordination complexes. Which statement describes the magnetic properties of the complexes?

Correct AnswerverifiedShow Answer

The compound, (NH₄) ₃[FeF₆], is named

Correct Answer
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The correct name for the compound, [CrCl₂(en) ₂]₂C₂O₄, is

Correct Answer
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Which complex-[Cr(H₂O)₆]²⁺ or [Cr(H₂O)₆]³⁺-has the greatest crystal field splitting, and why?

Correct Answer
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The 3+ species has the greater...
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In the coordination complex [Co(NH₃)₂(H₂O)₂Cl₂]⁺, the coordination number and oxidation number of the central atom are ________.

Correct Answer
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Coordinati...
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Correct Answer
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Write the correct name for the metal complex Na[Co(NO₂)₆].

Correct Answer
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sodium hex...
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The ethylenediamine molecule (en), functions as a bidentate ligand and forms a coordination complex with cobalt: [Co(en)₂(H₂O)₂]³⁺. Assign a coordination number and a charge to the cobalt ion in this coordination complex.

Correct Answer
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Correct Answer
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A Mo²⁺ ion has ________ 4d electrons.

Correct Answer
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Correct Answer
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The name for the transition metal complex [Fe(CN) ₆]^3- is

Correct Answer
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Correct Answer
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Correct Answer
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