Question 1

Cis-platinum complexes are

Accepted Answer

A)  used in the extraction of silver and gold. 
B)  effective antidotes for heavy metal poisoning (e.g., Pb2+ and Hg2+). 
C)  used to provide nutrients for plants. 
D)  used to prevent eutrophication of lakes. 
E)  effective antitumor agents. 
A)  used in the extraction of silver and gold. 
B)  effective antidotes for heavy metal poisoning (e.g., Pb2+ and Hg2+). 
C)  used to provide nutrients for plants. 
D)  used to prevent eutrophication of lakes. 
E)  effective antitumor agents. E

Question 2

The total number of electrons in the 3d orbitals of Co3+ is

Accepted Answer

A)  4. 
B)  5. 
C)  6. 
D)  7. 
E)  10. 
A)  4. 
B)  5. 
C)  6. 
D)  7. 
E)  10. C

Question 3

What is the oxidation number of Fe in [Fe(CN)6]4-

Accepted Answer

A)  +1 
B)  +2 
C)  +3 
D)  +4 
E)  None of the above 
A)  +1 
B)  +2 
C)  +3 
D)  +4 
E)  None of the above B

Question 4

The correct name of the complex ion [CuCl3Br(NH3)2]2- is:
diamminebromotrichlorocuprate(I) ion

Accepted Answer

A) True 
 B)False

Question 5

Which of the following complexes has optical (chiral) isomers

Accepted Answer

A)  [Co(H2O)4Br2]+ 
B)  [Co(en)Cl4]- 
C)  [Co(en)(H2O)4]3+ 
D)  [Co(en)2Cl2]+ 
E)  Co(H2O)3Cl3 
A)  [Co(H2O)4Br2]+ 
B)  [Co(en)Cl4]- 
C)  [Co(en)(H2O)4]3+ 
D)  [Co(en)2Cl2]+ 
E)  Co(H2O)3Cl3

Question 6

How many unpaired electrons are there in the complex ion [Mn(CN)6]3-

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 7

Assuming a coordination complex is formed with Fe2+ and 1,10-phenanthroline (shown below), which of the following statements is true

Accepted Answer

A)  If two 1,10-phenanthroline molecules are coordinated to the iron ion, then the coordination number is 2. 
B)  If two 1,10-phenanthroline molecules are coordinated to the iron ion, then the coordination number is 6. 
C)  If three 1,10-phenanthroline molecules are coordinated to the iron ion, then the coordination number is 3. 
D)  If three 1,10-phenanthroline molecules are coordinated to the iron ion, then the coordination number is 6. 
E)  If four 1,10-phenanthroline molecules are coordinated to the iron ion, then the coordination number is 4. 
A)  If two 1,10-phenanthroline molecules are coordinated to the iron ion, then the coordination number is 2. 
B)  If two 1,10-phenanthroline molecules are coordinated to the iron ion, then the coordination number is 6. 
C)  If three 1,10-phenanthroline molecules are coordinated to the iron ion, then the coordination number is 3. 
D)  If three 1,10-phenanthroline molecules are coordinated to the iron ion, then the coordination number is 6. 
E)  If four 1,10-phenanthroline molecules are coordinated to the iron ion, then the coordination number is 4.

Question 8

Which of these electron energy level patterns would absorb light with the shortest wavelength

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
A)  A 
B)  B 
C)  C 
D)  D

Question 9

In the complex ion [ML6]n+, Mn+ has six d electrons and L is a weak field ligand. According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 10

The total number of electrons in the 3d orbitals of a copper atom is

Accepted Answer

A)  6. 
B)  7. 
C)  8. 
D)  9. 
E)  10. 
A)  6. 
B)  7. 
C)  8. 
D)  9. 
E)  10.

Question 11

In the complex ion [ML6]n+, Mn+ has five d electrons and L is a strong field ligand. According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  5 
A)  0 
B)  1 
C)  2 
D)  3 
E)  5

Question 12

The terms that describe the geometric isomers that are possible for the complex [CrF2Cl4]3- are cis and trans.

Accepted Answer

A) True 
 B)False

Question 13

In the coordination compound K2[Co(en)Cl4], the coordination number (C.N.) and oxidation number (O.N.) of cobalt are

Accepted Answer

A)  C.N. = 6; O.N. = +2. 
B)  C.N. = 6; O.N. = +3. 
C)  C.N. = 5; O.N. = +2. 
D)  C.N. = 5; O.N. = +4. 
E)  C.N. = 4; O.N. = +3. 
A)  C.N. = 6; O.N. = +2. 
B)  C.N. = 6; O.N. = +3. 
C)  C.N. = 5; O.N. = +2. 
D)  C.N. = 5; O.N. = +4. 
E)  C.N. = 4; O.N. = +3.

Question 14

Predict the number of unpaired electrons in the [Fe(CN)6]4- ion.

Accepted Answer

A)  0 
B)  1 
C)  3 
D)  5 
E)  None of the above 
A)  0 
B)  1 
C)  3 
D)  5 
E)  None of the above

Question 15

Predict the number of unpaired electrons in the [Cr(en)3]2+ ion.

Accepted Answer

A)  0 
B)  1 
C)  3 
D)  5 
E)  None of the above 
A)  0 
B)  1 
C)  3 
D)  5 
E)  None of the above

Question 16

Bidentate and polydentate ligands are also called chelating agents.

Accepted Answer

A) True 
 B)False

Question 17

In the coordination compound [Co(en)2Cl2]Cl, the coordination number and oxidation number of the central atom are, respectively,

Accepted Answer

A)  4, +3. 
B)  6, +2. 
C)  4, +2. 
D)  6, +3. 
E)  4, +1. 
A)  4, +3. 
B)  6, +2. 
C)  4, +2. 
D)  6, +3. 
E)  4, +1.

Question 18

Which of these ligands produces the weakest crystal field

Accepted Answer

A)  CN- 
B)  I- 
C)  OH- 
D)  H2O 
E)  NH3 
A)  CN- 
B)  I- 
C)  OH- 
D)  H2O 
E)  NH3

Question 19

Which of the following complexes has optical (chiral) isomers

Accepted Answer

A)  [Co(NH3)4Br2]+ 
B)  [Co(en)3]3+ 
C)  Co(NH3)3Br3 
D)  [Co(en)Br4]- 
E)  [Co(en)(NH3)4]3+ 
A)  [Co(NH3)4Br2]+ 
B)  [Co(en)3]3+ 
C)  Co(NH3)3Br3 
D)  [Co(en)Br4]- 
E)  [Co(en)(NH3)4]3+

Question 20

What is the oxidation number of Co in the complex Co(H2O)3Cl3

Accepted Answer

A)  +1 
B)  +2 
C)  +3 
D)  +4 
E)  None of the above 
A)  +1 
B)  +2 
C)  +3 
D)  +4 
E)  None of the above

Exam 23: Transition Metals Chemistry and Coordination Compounds

Cis-platinum complexes are

The total number of electrons in the 3d orbitals of Co3+ is

What is the oxidation number of Fe in [Fe(CN)6]4-

The correct name of the complex ion [CuCl3Br(NH3)2]2- is: diamminebromotrichlorocuprate(I) ion

Which of the following complexes has optical (chiral) isomers

How many unpaired electrons are there in the complex ion [Mn(CN)6]3-

Assuming a coordination complex is formed with Fe2+ and 1,10-phenanthroline (shown below), which of the following statements is true

Which of these electron energy level patterns would absorb light with the shortest wavelength

In the complex ion [ML6]n+, Mn+ has six d electrons and L is a weak field ligand. According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons

The total number of electrons in the 3d orbitals of a copper atom is

In the complex ion [ML6]n+, Mn+ has five d electrons and L is a strong field ligand. According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons

The terms that describe the geometric isomers that are possible for the complex [CrF2Cl4]3- are cis and trans.

In the coordination compound K2[Co(en)Cl4], the coordination number (C.N.) and oxidation number (O.N.) of cobalt are

Predict the number of unpaired electrons in the [Fe(CN)6]4- ion.

Predict the number of unpaired electrons in the [Cr(en)3]2+ ion.

Bidentate and polydentate ligands are also called chelating agents.

In the coordination compound [Co(en)2Cl2]Cl, the coordination number and oxidation number of the central atom are, respectively,

Which of these ligands produces the weakest crystal field

Which of the following complexes has optical (chiral) isomers

What is the oxidation number of Co in the complex Co(H2O)3Cl3

Chemistry: The Study of Change

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Mass Relationships in Chemical Reactions

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Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

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Physical Properties of Solutions

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Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

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Filters

The total number of electrons in the 3d orbitals of Co³⁺ is

What is the oxidation number of Fe in [Fe(CN)₆]^4-

The correct name of the complex ion [CuCl₃Br(NH₃)₂]^2- is: diamminebromotrichlorocuprate(I) ion

How many unpaired electrons are there in the complex ion [Mn(CN)₆]^3-

Assuming a coordination complex is formed with Fe²⁺ and 1,10-phenanthroline (shown below), which of the following statements is true

In the complex ion [ML₆]ⁿ⁺, Mⁿ⁺ has six d electrons and L is a weak field ligand. According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons

In the complex ion [ML₆]ⁿ⁺, Mⁿ⁺ has five d electrons and L is a strong field ligand. According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons

The terms that describe the geometric isomers that are possible for the complex [CrF₂Cl₄]^3- are cis and trans.

In the coordination compound K₂[Co(en)Cl₄], the coordination number (C.N.) and oxidation number (O.N.) of cobalt are

Predict the number of unpaired electrons in the [Fe(CN)₆]^4- ion.

Predict the number of unpaired electrons in the [Cr(en)₃]²⁺ ion.

In the coordination compound [Co(en)₂Cl₂]Cl, the coordination number and oxidation number of the central atom are, respectively,

What is the oxidation number of Co in the complex Co(H₂O)₃Cl₃