Question 1

In the spectrochemical series,which one of the following ligands has the strongest field?

Accepted Answer

A)  H2O
B)  CN-
C)  NH3
D)  OH-
E)  Cl-F) A) and E)
G) A) and D) B

Question 2

Consider the following octahedral complex structures,each involving ethylene diamine and two different,unidentate ligands X and Y. 
Which one of the following statements about these structures is incorrect?

Accepted Answer

A)  Structures 1 and 2 are optical isomers.
B)  Structures 1 and 3 are optical isomers.
C)  Structures 1 and 3 are different complexes.
D)  Structures 1 and 4 are geometrical isomers.
E)  Structures 3 and 4 are the same complex.F) A) and B)
G) A) and E)

Question 3

Which of the following will be the strongest oxidizing agent?

Accepted Answer

A)  Cr
B)  Cr(II) 
C)  Cr(III) 
D)  Cr(IV) 
E)  Cr(VI) F) A) and C)
G) C) and D)

Question 4

The crystal field splitting energy, Δ\DeltaΔ ,

Accepted Answer

A)  is larger for tetrahedral complexes than for octahedral complexes.
B)  depends on the metal but not on the ligand.
C)  determines the color of a complex.
D)  is larger for ionic ligands like chloride than for molecular ligands like carbon monoxide,CO.
E)  determines the charge of a complex. F) B) and E)
G) C) and D)

Question 5

According to valence bond theory,what would be the set of hybrid orbitals used when a Period 4 transition metal forms a tetrahedral complex?

Accepted Answer

A)  d2sp
B)  dsp2
C)  dsp3
D)  sp3
E)  d2p2F) A) and E)
G) B) and D)

Question 6

What is the coordination number of cobalt in the complex ion [Co(en) Cl4]-? (en = ethylenediamine)

Accepted Answer

A)  1
B)  2
C)  4
D)  6
E)  8F) All of the above
G) A) and D)

Question 7

Tetrahedral complexes can exhibit both optical and linkage isomerism.

Accepted Answer

A) True 
 B)False

Question 8

Write the formula for sodium tetracyanonickelate(II) .

Accepted Answer

A)  Na[Ni(CN) 4]
B)  Na[Ni(CN) 4]2
C)  Na2[Ni(CN) 4]
D)  Na4[Ni(CN) 4]
E)  None of these choices is correct.F) B) and C)
G) All of the above

Question 9

Apply the valence bond theory to predict the electronic structure and hybridization pattern of chromium in the complex ion Cr(NH3)63+.

Accepted Answer

The three d electrons of the Cr(III)will occupy three 3d orbitals,singly.The remaining two 3d orbitals will be hybridized with the 4s and 4p orbitals,yielding six d²sp³ hybrid orbitals,which are used to accommodate the six lone pairs of the ammonia ligands.

Question 10

If M represents a transition element,which of the following oxides should be the least basic?

Accepted Answer

A)  MO
B)  M2O
C)  M2O3
D)  MO2
E)  MO3F) B) and C)
G) All of the above

Question 11

In the compound [Ni(en) 2(H2O) 2]SO4 (where en = ethylenediamine) the oxidation number and coordination number of nickel are,respectively:

Accepted Answer

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

Question 12

Which of the following transition elements will form an ion with the largest oxidation number?

Accepted Answer

A)  chromium,Cr,Group 6B(6) 
B)  manganese,Mn,Group 7B(7) 
C)  iron,Fe,Group 8B(8) 
D)  cobalt,Co,Group 8B(9) 
E)  zinc,Zn,Group 2B(12) F) A) and D)
G) C) and D)

Question 13

The compound Rh(CO)(H)(PH3)2 forms cis and trans isomers.Use this information to predict the geometry of this complex,and draw the geometric isomers.

Accepted Answer

The complex has four ligands a...

Question 14

In a coordination compound involving a complex ion of square planar geometry,which of the following types of isomerism is/are never possible?

Accepted Answer

A)  geometric
B)  optical
C)  linkage
D)  coordination
E)  more than one of the aboveF) A) and C)
G) A) and E)

Question 15

Which of the following ions could exist in only the high-spin state in an octahedral complex?

Accepted Answer

A)  Cr2+
B)  Mn4+
C)  Fe3+
D)  Co3+
E)  Ni2+F) D) and E)
G) C) and D)

Question 16

The ground state electron configuration of Cr2+ is

Accepted Answer

A)  [Ar]4s13d5
B)  [Ar]4s23d4
C)  [Ar]3d4
D)  [Ar]4s13d3
E)  [Ar]4s23d2F) A) and C)
G) A) and D) C

Question 17

Of the 3d transition series of elements,scandium has the greatest atomic radius.

Accepted Answer

A) True 
 B)False

Question 18

The oxidation and coordination numbers of cobalt in the compound [Co(NH3) 5Cl]Cl2 are,respectively:

Accepted Answer

A)  2 and 6
B)  2 and 8
C)  3 and 6
D)  3 and 8
E)  None of these choices is correct.F) C) and D)
G) A) and D)

Question 19

Which of the following species could exist as isomers?

Accepted Answer

A)  [Co(H2O) 4Cl2]+
B)  [Pt(NH3) Br3]-
C)  [Pt(en) Cl2]
D)  [Pt(NH3) 3Cl]+
E)  None of these choices is correct.F) None of the above
G) A) and D)

Question 20

What geometry is particularly common for complexes of d10 metal ions?

Accepted Answer

Exam 22: The Transition Elements and Their Coordination Compounds

In the spectrochemical series,which one of the following ligands has the strongest field?

Correct AnswerverifiedB

Consider the following octahedral complex structures,each involving ethylene diamine and two different,unidentate ligands X and Y. Which one of the following statements about these structures is incorrect?

Correct AnswerverifiedShow Answer

Which of the following will be the strongest oxidizing agent?

Correct AnswerverifiedShow Answer

The crystal field splitting energy, Δ\DeltaΔ ,

Correct AnswerverifiedShow Answer

According to valence bond theory,what would be the set of hybrid orbitals used when a Period 4 transition metal forms a tetrahedral complex?

Correct AnswerverifiedShow Answer

What is the coordination number of cobalt in the complex ion [Co(en) Cl4]-? (en = ethylenediamine)

Correct AnswerverifiedShow Answer

Tetrahedral complexes can exhibit both optical and linkage isomerism.

Correct AnswerverifiedShow Answer

Write the formula for sodium tetracyanonickelate(II) .

Correct AnswerverifiedShow Answer

Apply the valence bond theory to predict the electronic structure and hybridization pattern of chromium in the complex ion Cr(NH3)63+.

Correct AnswerverifiedThe three d electrons of the Cr(III)will occupy three 3d orbitals,singly.The remaining two 3d orbitals will be hybridized with the 4s and 4p orbitals,yielding six d2sp3 hybrid orbitals,which are used to accommodate the six lone pairs of the ammonia ligands.

If M represents a transition element,which of the following oxides should be the least basic?

Correct AnswerverifiedShow Answer

In the compound [Ni(en) 2(H2O) 2]SO4 (where en = ethylenediamine) the oxidation number and coordination number of nickel are,respectively:

Correct AnswerverifiedShow Answer

Which of the following transition elements will form an ion with the largest oxidation number?

Correct AnswerverifiedShow Answer

The compound Rh(CO)(H)(PH3)2 forms cis and trans isomers.Use this information to predict the geometry of this complex,and draw the geometric isomers.

Correct AnswerverifiedThe complex has four ligands a...View AnswerShow Answer

In a coordination compound involving a complex ion of square planar geometry,which of the following types of isomerism is/are never possible?

Correct AnswerverifiedShow Answer

Which of the following ions could exist in only the high-spin state in an octahedral complex?

Correct AnswerverifiedShow Answer

The ground state electron configuration of Cr2+ is

Correct AnswerverifiedC

Of the 3d transition series of elements,scandium has the greatest atomic radius.

Correct AnswerverifiedShow Answer

The oxidation and coordination numbers of cobalt in the compound [Co(NH3) 5Cl]Cl2 are,respectively:

Correct AnswerverifiedShow Answer

Which of the following species could exist as isomers?

Correct AnswerverifiedShow Answer

What geometry is particularly common for complexes of d10 metal ions?

Correct AnswerverifiedShow Answer

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B

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The crystal field splitting energy, $\Delta$ ,

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What is the coordination number of cobalt in the complex ion [Co(en) Cl₄]^-? (en = ethylenediamine)

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Apply the valence bond theory to predict the electronic structure and hybridization pattern of chromium in the complex ion Cr(NH₃)₆³⁺.

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The three d electrons of the Cr(III)will occupy three 3d orbitals,singly.The remaining two 3d orbitals will be hybridized with the 4s and 4p orbitals,yielding six d²sp³ hybrid orbitals,which are used to accommodate the six lone pairs of the ammonia ligands.

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In the compound [Ni(en) ₂(H₂O) ₂]SO₄ (where en = ethylenediamine) the oxidation number and coordination number of nickel are,respectively:

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The compound Rh(CO)(H)(PH₃)₂ forms cis and trans isomers.Use this information to predict the geometry of this complex,and draw the geometric isomers.

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The complex has four ligands a...
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The ground state electron configuration of Cr²⁺ is

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C

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The oxidation and coordination numbers of cobalt in the compound [Co(NH₃) ₅Cl]Cl₂ are,respectively:

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What geometry is particularly common for complexes of d¹⁰ metal ions?

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