Question 1

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 2

The electron configuration of a nickel atom is

Accepted Answer

A) [Ar]4s23d6. 
B) [Ar]4s13d7. 
C) [Ar]3d8. 
D) [Ar]4s23d8. 
E) [Ar]3d10. 
A) [Ar]4s23d6. 
B) [Ar]4s13d7. 
C) [Ar]3d8. 
D) [Ar]4s23d8. 
E) [Ar]3d10.

Question 3

The electron configuration of a Cr3+ ion is

Accepted Answer

A) [Ar]3d5. 
B) [Ar]4s13d2. 
C) [Ar]3d3. 
D) [Ar]4s13d5. 
E) [Ar]4s23d4. 
A) [Ar]3d5. 
B) [Ar]4s13d2. 
C) [Ar]3d3. 
D) [Ar]4s13d5. 
E) [Ar]4s23d4.

Question 4

The neutral monodentate ligand L forms the complex ion [CrL6]2+, and the magnetic properties of this complex correspond to 2 unpaired electrons. Is L a strong-field or weak-field ligand? Explain your reasoning.

Accepted Answer

L is a strong-field ligand. Reasoning (a

Question 5

In the complex ion [ML6]n+, Mn+ has seven 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 6

The best name for K4[FeCl2(CN)4] is

Accepted Answer

A) tetrapotassium dichlorodicyanoiron(II). 
B) potassium dichlorodicyanoiron(II). 
C) potassium dichlorodicyanoferrate(III). 
D) tetrapotassium dichlorobis(cyano)iron(III). 
E) potassium dichlorotetracyanoferrate(II). 
A) tetrapotassium dichlorodicyanoiron(II). 
B) potassium dichlorodicyanoiron(II). 
C) potassium dichlorodicyanoferrate(III). 
D) tetrapotassium dichlorobis(cyano)iron(III). 
E) potassium dichlorotetracyanoferrate(II).

Question 7

What terms describe the geometric isomers that are possible for the complex [CrF2Cl4]3-?

Accepted Answer

Question 8

How many 3d electrons does a V3+ ion have?

Accepted Answer

A) 6 
B) 5 
C) 4 
D) 3 
E) 2 
A) 6 
B) 5 
C) 4 
D) 3 
E) 2

Question 9

Name the complex ion [Ni(CN)4]2-.

Accepted Answer

tetracyano

Question 10

The electron configuration of a Co3+ ion is

Accepted Answer

A) [Ar]3d6. 
B) [Ar]4s13d5. 
C) [Ar] 4s23d4. 
D) [Ar]3d5. 
E) [Ar]3d4. 
A) [Ar]3d6. 
B) [Ar]4s13d5. 
C) [Ar] 4s23d4. 
D) [Ar]3d5. 
E) [Ar]3d4.

Question 11

The numbers of geometrical isomers and optical isomers of the complex ion [Co(en)3]3+ are, respectively,

Accepted Answer

A) 2 and 2. 
B) 1 and 1. 
C) 3 and 2. 
D) 1 and 2. 
E) 2 and 4. 
A) 2 and 2. 
B) 1 and 1. 
C) 3 and 2. 
D) 1 and 2. 
E) 2 and 4.

Question 12

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 13

Predict the number of unpaired electrons in the [Fe(CN)6]3- ion.

Accepted Answer

Question 14

Give the coordination number (C.N.)and oxidation number (O.N.)of the metal atom in the coordination compound [Cr(NH3)2(en)Cl2].

Accepted Answer

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

Question 15

The ion [Co(NH3)6]2+ is octahedral and high spin. This complex is

Accepted Answer

A) paramagnetic, with 1 unpaired electron. 
B) paramagnetic, with 3 unpaired electrons. 
C) paramagnetic, with 4 unpaired electrons. 
D) paramagnetic, with 5 unpaired electrons. 
E) diamagnetic. 
A) paramagnetic, with 1 unpaired electron. 
B) paramagnetic, with 3 unpaired electrons. 
C) paramagnetic, with 4 unpaired electrons. 
D) paramagnetic, with 5 unpaired electrons. 
E) diamagnetic.

Question 16

How many 3d electrons does a Mn2+ ion have?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 17

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 18

The coordination compound shown below has

Accepted Answer

A) two monodentate ligands and two bidentate ligands. 
B) three monodentate ligands and two bidentate ligands. 
C) four monodentate ligands and two bidentate ligands. 
D) one monodentate ligand and four bidentate ligands. 
E) four bidentate ligands. 
A) two monodentate ligands and two bidentate ligands. 
B) three monodentate ligands and two bidentate ligands. 
C) four monodentate ligands and two bidentate ligands. 
D) one monodentate ligand and four bidentate ligands. 
E) four bidentate ligands.

Question 19

Write the chemical formula of diamminedichloroplatinum(II).

Accepted Answer

The answer of Write the chemical formula of diamminedichloroplatinum(II)....

Question 20

What is the coordination number of silver in [Ag(NH3)2]Cl?

Accepted Answer

Exam 20: The Chemistry of Coordination Compounds

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

The electron configuration of a nickel atom is

The electron configuration of a Cr3+ ion is

The neutral monodentate ligand L forms the complex ion [CrL6]2+, and the magnetic properties of this complex correspond to 2 unpaired electrons. Is L a strong-field or weak-field ligand? Explain your reasoning.

In the complex ion [ML6]n+, Mn+ has seven 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 best name for K4[FeCl2(CN)4] is

What terms describe the geometric isomers that are possible for the complex [CrF2Cl4]3-?

How many 3d electrons does a V3+ ion have?

Name the complex ion [Ni(CN)4]2-.

The electron configuration of a Co3+ ion is

The numbers of geometrical isomers and optical isomers of the complex ion [Co(en)3]3+ are, respectively,

Which of these ligands produces the weakest crystal field?

Predict the number of unpaired electrons in the [Fe(CN)6]3- ion.

Give the coordination number (C.N.)and oxidation number (O.N.)of the metal atom in the coordination compound [Cr(NH3)2(en)Cl2].

The ion [Co(NH3)6]2+ is octahedral and high spin. This complex is

How many 3d electrons does a Mn2+ ion have?

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 coordination compound shown below has

Write the chemical formula of diamminedichloroplatinum(II).

What is the coordination number of silver in [Ag(NH3)2]Cl?

Introduction

Atoms, Molecules, and Ions

Stoichiometry

Reactions in Aqueous Solution

Gases

Energy Relationships in Chemical Reactions

The Electronic Structure of Atoms

The Periodic Table

Chemical Bonding I: the Covalent Bond

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Introduction to Organic Chemistry

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Thermodynamics

Redox Reactions and Electrochemistry

Nuclear Chemistry

Organic Polymerssynthetic and Natural

Filters

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

The electron configuration of a Cr³⁺ ion is

The neutral monodentate ligand L forms the complex ion [CrL₆]²⁺, and the magnetic properties of this complex correspond to 2 unpaired electrons. Is L a strong-field or weak-field ligand? Explain your reasoning.

In the complex ion [ML₆]ⁿ⁺, Mⁿ⁺ has seven 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 best name for K₄[FeCl₂(CN)₄] is

What terms describe the geometric isomers that are possible for the complex [CrF₂Cl₄]^3-?

How many 3d electrons does a V³⁺ ion have?

Name the complex ion [Ni(CN)₄]^2-.

The electron configuration of a Co³⁺ion is

The numbers of geometrical isomers and optical isomers of the complex ion [Co(en)₃]³⁺ are, respectively,

Predict the number of unpaired electrons in the [Fe(CN)₆]^3- ion.

Give the coordination number (C.N.)and oxidation number (O.N.)of the metal atom in the coordination compound [Cr(NH₃)₂(en)Cl₂].

The ion [Co(NH₃)₆]²⁺ is octahedral and high spin. This complex is

How many 3d electrons does a Mn²⁺ ion have?

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?

What is the coordination number of silver in [Ag(NH₃)₂]Cl?