Question 1

In the coordination compound [Pt(NH3)2Cl2], the coordination number and oxidation number of the central atom are, respectively,

Accepted Answer

A) 2, 0. 
B) 4, 4. 
C) 5, 0. 
D) 4, 2. 
E) 6, 2. 
A) 2, 0. 
B) 4, 4. 
C) 5, 0. 
D) 4, 2. 
E) 6, 2. D

Question 2

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 (answers will vary): The oxidation state of chromium in this complex is +2, so there are four d electrons.For only two of these electrons to be unpaired, [CrL₆]²⁺ must be a low-spin complex, so L must be a strong-field ligand.

Question 3

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

Accepted Answer

2

Question 4

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

Accepted Answer

tetracyano

Question 5

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 6

What is the oxidation number of Co in the complex Na[Co(H2O)2Cl4]?

Accepted Answer

Question 7

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

Accepted Answer

Question 8

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 9

What is the oxidation number of cobalt in [Co(NH3)6]Cl3?

Accepted Answer

Question 10

The correct name for [Fe(CO)6]Br3 is:

Accepted Answer

A) hexacarbonyliron(II)bromide 
B) hexacarbonyliron(III)bromide 
C) hexacarbonyltribromoiron(III) 
D) hexacarbonyltribromoiron(II) 
E) hexacarbonyliron(III)tribromide 
A) hexacarbonyliron(II)bromide 
B) hexacarbonyliron(III)bromide 
C) hexacarbonyltribromoiron(III) 
D) hexacarbonyltribromoiron(II) 
E) hexacarbonyliron(III)tribromide

Question 11

Copper can be separated from iron in the ore chalcopyrite (CuFeS2)by heating the ore in the presence of oxygen to form copper(I)sulfide, iron(II)oxide, and sulfur dioxide.Write a balanced chemical equation for this process.

Accepted Answer

2CuFeS₂(s)+ 4O₂(g)@#LAT-DLM&Cu₂S(s)+ 2FeO(s

Question 12

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 13

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 14

Draw and label the geometric isomers of [CrF2Cl4]3-?

Accepted Answer

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

In transition metal complexes, the metal ions are Lewis acids.

Accepted Answer

A) True 
 B)False

Question 17

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 18

In [Cu(NH3)4]CO3, how many 3d electrons does copper have?

Accepted Answer

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

Question 19

The correct name for K3[Fe(C2O4)3] is:

Accepted Answer

A) tripotassium trioxalatoiron(III) 
B) potassium trioxalatoiron(II) 
C) potassium trioxalatoiron(III) 
D) tripotassium oxalatoiron(0) 
E) potassium trioxalateiron(II) 
A) tripotassium trioxalatoiron(III) 
B) potassium trioxalatoiron(II) 
C) potassium trioxalatoiron(III) 
D) tripotassium oxalatoiron(0) 
E) potassium trioxalateiron(II)

Question 20

Predict the number of unpaired electrons in the [CrCl6]4- ion.

Accepted Answer

Exam 23: Transition Metal Chemistry and Coordination Compounds

In the coordination compound [Pt(NH3)2Cl2], the coordination number and oxidation number of the central atom are, respectively,

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.

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

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

The coordination compound shown below has

What is the oxidation number of Co in the complex Na[Co(H2O)2Cl4]?

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

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?

What is the oxidation number of cobalt in [Co(NH3)6]Cl3?

The correct name for [Fe(CO)6]Br3 is:

Copper can be separated from iron in the ore chalcopyrite (CuFeS2)by heating the ore in the presence of oxygen to form copper(I)sulfide, iron(II)oxide, and sulfur dioxide.Write a balanced chemical equation for this process.

The electron configuration of a Co3+ ion is

The electron configuration of a Cr3+ ion is

Draw and label the geometric isomers of [CrF2Cl4]3-?

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

In transition metal complexes, the metal ions are Lewis acids.

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

In [Cu(NH3)4]CO3, how many 3d electrons does copper have?

The correct name for K3[Fe(C2O4)3] is:

Predict the number of unpaired electrons in the [CrCl6]4- ion.

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In the coordination compound [Pt(NH₃)₂Cl₂], the coordination number and oxidation number of the central atom are, respectively,

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.

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

Name the complex ion [Ni(CN)₄]^2-.

What is the oxidation number of Co in the complex Na[Co(H₂O)₂Cl₄]?

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

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?

What is the oxidation number of cobalt in [Co(NH₃)₆]Cl₃?

The correct name for [Fe(CO)₆]Br₃is:

Copper can be separated from iron in the ore chalcopyrite (CuFeS₂)by heating the ore in the presence of oxygen to form copper(I)sulfide, iron(II)oxide, and sulfur dioxide.Write a balanced chemical equation for this process.

The electron configuration of a Co³⁺ion is

The electron configuration of a Cr³⁺ ion is

Draw and label the geometric isomers of [CrF₂Cl₄]^3-?

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

The best name for K₄[FeCl₂(CN)₄] is

In [Cu(NH₃)₄]CO₃, how many 3d electrons does copper have?

The correct name for K₃[Fe(C₂O₄)₃] is:

Predict the number of unpaired electrons in the [CrCl₆]^4- ion.