Question 1

Name the following: Fe[AlF6]

Accepted Answer

A)   iron(II)  hexafluoroaluminate
B)   iron(II)  hexafluoroaluminum
C)   iron(III)  hexafluoroaluminate
D)   iron(I)  aluminumhexafluoride
E)   aluminumhexafluoroferrateF) C) and D)
G) A) and E)

Question 2

The complex ion [Ni(NH3) 6]2+ has a maximum absorption near 580 nm. Calculate the crystal field splitting energy (in kJ mol-1)  for this ion.

Accepted Answer

A)   114 kJ mol-1
B)   292 kJ mol-1
C)   343 kJ mol-1
D)   206 kJ mol-1
E)   485 kJ mol-1F) All of the above
G) B) and D)

Question 3

Which of the following pairs of coordination compounds or complex ions are examples of coordination isomers?

Accepted Answer

A)   [Fe(CO) 5NO2]2+ and [Fe(CO) 5ONO]2+
B)   [Fe(NH3) 2(H2O) 4]Cl2 and [Fe(NH3) 2(H2O) 4]Br2
C)   [Fe(NH3) 2(H2O) 4]Cl2 and [Fe(NH3) 4(H2O) 2]Cl2
D)   [Cu(CO) 5Br]Cl and [Cu(CO) 5Cl]Br
E)   [MnCl3Br]2- and [MnClBr3]2-F) A) and B)
G) All of the above

Question 4

Choose the electron configuration for Ti2+.

Accepted Answer

A)   [Ar]3d2
B)   [Ar]4s23d2
C)   [Ar]4s23d4
D)   [Ar]4s2
E)   [Ne]3s23p6F) B) and D)
G) A) and E)

Question 5

Which of the following species is diamagnetic?

Accepted Answer

A)   an isolated gas-phase Cr3+ ion
B)   a high-spin octahedral Cr2+ complex
C)   an isolated gas-phase Cu2+ ion
D)   a low-spin octahedral Co3+ complexE) B) and D)
F) All of the above

Question 6

Which of the following complex ions absorbs light of the shortest wavelength?

Accepted Answer

A)   [FeCl6]3-
B)   [Fe(OH) 6]3-
C)   [Fe(CN) 6]3-
D)   [Fe(H2O) 6]3+
E)   [FeI6]3-F) D) and E)
G) A) and C)

Question 7

How many unpaired electrons would you expect for the complex ion [Fe(CN) 6]4-?

Accepted Answer

A)   5
B)   2
C)   6
D)   4
E)   0F) B) and D)
G) C) and D)

Question 8

Choose the bidentate ligand from the substances below.

Accepted Answer

A)   ethylenediamine
B)   EDTA
C)   cyanide ion
D)   ammonia
E)   carbon monoxideF) A) and B)
G) A) and C)

Question 9

Name the following: [Fe(H2O) 4Br2]Cl

Accepted Answer

A)   tetraaquadibromoiron(II)  chloride
B)   dibromotetrahydroironchloride
C)   dibromotetrahydroiron(II)  chloride
D)   dibromotetraquairon(II)  chloride
E)   tetraaquadibromoiron(III)  chlorideF) A) and B)
G) A) and C)

Question 10

Explain how EDTA is used to treat lead poisoning.

Accepted Answer

A calcium complex of EDTA is a...

Question 11

Which of the following is a type of structural isomerism?

Accepted Answer

A)   linkage isomers
B)   cis-trans isomers
C)   fac-mer isomers
D)   enantiomers
E)   optical isomersF) D) and E)
G) C) and E)

Question 12

What is the ground-state electron configuration for the element chromium (Z = 24) ?

Accepted Answer

A)   [Ne] 4s23d4
B)   [Ar] 4s23d4
C)   [Ar] 4s13d5
D)   [Ar] 3d6E) None of the above
F) A) and D)

Question 13

Choose the electron configuration for Cr3+.

Accepted Answer

A)   [Ne]3s23p6
B)   [Ar]4s13d2
C)   [Ar]4s23d1
D)   [Ar]4s23d7
E)   [Ar]3d3F) D) and E)
G) A) and B)

Question 14

What is the ground-state electron configuration for Cr3+ (Z = 2 4) ?

Accepted Answer

A)   [Ar] 4s23d7
B)   [Ar] 4s23d1
C)   [Ar] 3d3
D)   [Ar] 4s13d2E) None of the above
F) B) and C)

Question 15

Determine the chemical formula for the compound tris(ethylenediamine) chromium(III)  chloride.

Accepted Answer

A)   [Cr(NH2CH2CH2NH2) 3]Cl3
B)   [(NH2CH2CH2NH2) 3]Cr3+
C)   [Cr(NH2CH2CH2NH2) 3]3+
D)   Cl2[Cr(NH2CH2CH2NH2) 4]
E)   [Cr(NH2CH2CH2NH2) 2]Cl2F) A) and E)
G) B) and E)

Question 16

Match the following.
-optical

Accepted Answer

A)  [Cr(en) 3]3+
B)  [Zn(NH3) 2Cl2]Br2 and [Zn(NH3) 2Br2]Cl2
C)  [Ni(CN) 2(OH) 2]2-
D)  [Cr(NH3) 3(CO) 3]3+
E)  [Cu(SCN) 4]3- and [Cu(NCS) 4]3-F) C) and D)
G) A) and B)

Question 17

How many unpaired electrons would you expect for the complex ion [Co(OH) 6]3-?

Accepted Answer

A)   1
B)   2
C)   4
D)   0
E)   3F) B) and E)
G) A) and D)

Question 18

Name the following: [Fe(CO) 6][Ag(CN) 2]2

Accepted Answer

A)   iron(III)  hexacarbonyl silverdicyanide
B)   hexacarbonyliron(II)  dicyanoargentate
C)   iron(II)  carbonyl silvercyanide
D)   hexacarbonyliron(III)  dicyanosilvate
E)   iron(II)  hexacarbonyl silvercyanideF) A) and D)
G) D) and E)

Question 19

Determine the chemical formula for the compound diamminetetraaquairon(II)  chloride.

Accepted Answer

A)   [Fe(NH3) 2(H2O) 4Cl]
B)   [Fe(NH3) 2][(H2O) 4Cl]
C)   [Fe(NH3) 2(H2O) 4]Cl2
D)   [Fe(H2O) 4][(NH3) 2Cl]
E)   [Fe(NH3) 2]Cl3·4H2OF) C) and D)
G) A) and D)

Question 20

Determine the chemical formula for the compound tetracarbonylplatinum(IV)  chloride.

Accepted Answer

A)   [Pt(CO) 4]Cl2
B)   [Pt(CO) 4]Cl4
C)   [Pt(CO) 4Cl4]2-
D)   [PtCl4](CO) 4
E)   [Pt(CO) 4Cl4]4-F) A) and D)
G) All of the above

Exam 25: Transition Metals and Coordination Compounds

How many unpaired electrons would you expect for the complex ion [Fe(CN) 6]4-?

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Determine the chemical formula for the compound tetracarbonylplatinum(IV) chloride.

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Choose the bidentate ligand from the substances below.

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How many unpaired electrons would you expect for the complex ion [Co(OH) 6]3-?

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Determine the chemical formula for the compound tris(ethylenediamine) chromium(III) chloride.

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Determine the chemical formula for the compound diamminetetraaquairon(II) chloride.

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Explain how EDTA is used to treat lead poisoning.

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Match the following. -optical

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Name the following: [Fe(CO) 6][Ag(CN) 2]2

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Choose the electron configuration for Ti2+.

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What is the ground-state electron configuration for Cr3+ (Z = 2 4) ?

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The complex ion [Ni(NH3) 6]2+ has a maximum absorption near 580 nm. Calculate the crystal field splitting energy (in kJ mol-1) for this ion.

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Which of the following pairs of coordination compounds or complex ions are examples of coordination isomers?

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Choose the electron configuration for Cr3+.

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Which of the following species is diamagnetic?

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Which of the following is a type of structural isomerism?

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Name the following: Fe[AlF6]

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What is the ground-state electron configuration for the element chromium (Z = 24) ?

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Name the following: [Fe(H2O) 4Br2]Cl

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Which of the following complex ions absorbs light of the shortest wavelength?

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How many unpaired electrons would you expect for the complex ion [Fe(CN) ₆]^4-?

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How many unpaired electrons would you expect for the complex ion [Co(OH) ₆]^3-?

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A calcium complex of EDTA is a...
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Name the following: [Fe(CO) ₆][Ag(CN) ₂]₂

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Choose the electron configuration for Ti²⁺.

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What is the ground-state electron configuration for Cr³⁺ (Z = 2 4) ?

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The complex ion [Ni(NH₃) ₆]²⁺ has a maximum absorption near 580 nm. Calculate the crystal field splitting energy (in kJ mol^-1) for this ion.

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Choose the electron configuration for Cr³⁺.

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Name the following: Fe[AlF₆]

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Name the following: [Fe(H₂O) ₄Br₂]Cl

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