Question 1

Name the complex ion [CuCl3Br(NH3)2]2-.

Accepted Answer

diamminebr

Question 2

Write the chemical formula of triammineaquodichlorochromium(III)chloride.

Accepted Answer

The answer of Write the chemical formula of triammineaquodichlorochromium(III)chloride....

Question 3

Consider the [CoCl6]4- ion. Which response includes all the following statements that are true and no false statements? I. The oxidation number of Co is -4.
II. The coordination number of cobalt is 6.
III. It is paramagnetic.
IV. It is a low-spin complex.

Accepted Answer

A) I, II, III, IV 
B) I, IV 
C) II, III 
D) I, III 
E) III, IV 
A) I, II, III, IV 
B) I, IV 
C) II, III 
D) I, III 
E) III, IV

Question 4

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

Accepted Answer

Question 5

The total number of electrons in the 3d orbitals of Cr3+ is

Accepted Answer

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

Question 6

Which response gives the correct coordination number (C.N.)and oxidation number (O.N.)of the transition metal atom in [Co(NH3)2(H2O)2Cl2]+?

Accepted Answer

A) C.N. = 2; O.N. = +3 
B) C.N. = 3; O.N. = +1 
C) C.N. = 4; O.N. = +2 
D) C.N. = 6; O.N. = +1 
E) C.N. = 6; O.N. = +3 
A) C.N. = 2; O.N. = +3 
B) C.N. = 3; O.N. = +1 
C) C.N. = 4; O.N. = +2 
D) C.N. = 6; O.N. = +1 
E) C.N. = 6; O.N. = +3

Question 7

Cis-trans isomerism is exhibited by which one of these ions?

Accepted Answer

A) [Pd(NH3)3Cl]+ 
B) [Co(NH3)5Cl]2+ 
C) [Fe(CN)6]3- 
D) All of the above. 
E) None of the above. 
A) [Pd(NH3)3Cl]+ 
B) [Co(NH3)5Cl]2+ 
C) [Fe(CN)6]3- 
D) All of the above. 
E) None of the above.

Question 8

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 9

Two complex ions containing Ni are [Ni(NH3)6]2+, which is blue, and [Ni(en)3]2+, which is purple. Which one of these statements is true?

Accepted Answer

A) The crystal field splitting energy ($\Delta$)is greater for [Ni(NH3)6]2+ than for [Ni(en)3]2+. 
B) [Ni(en)3]2+ absorbs light in the violet region of the spectrum. 
C) Both complex ions are diamagnetic. 
D) The energy of the photon absorbed by [Ni(en)3]2+ is greater than that absorbed by [Ni(NH3)6]2+. 
E) The wavelength of the light absorbed by [Ni(en)3]2+ is greater than the wavelength absorbed by [Ni(NH3)6]2+. 
A) The crystal field splitting energy ($\Delta$)is greater for [Ni(NH3)6]2+ than for [Ni(en)3]2+. 
B) [Ni(en)3]2+ absorbs light in the violet region of the spectrum. 
C) Both complex ions are diamagnetic. 
D) The energy of the photon absorbed by [Ni(en)3]2+ is greater than that absorbed by [Ni(NH3)6]2+. 
E) The wavelength of the light absorbed by [Ni(en)3]2+ is greater than the wavelength absorbed by [Ni(NH3)6]2+.

Question 10

In the complex ion [ML6]n+, Mn+ has seven 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) 5 
A) 0 
B) 1 
C) 2 
D) 3 
E) 5

Question 11

The systematic name of the coordination compound K2[Co(H2O)2I4] is potassium diaquotetraiodocobaltate(II).

Accepted Answer

A) True 
 B)False

Question 12

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 13

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

Accepted Answer

Question 14

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.

Question 15

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

Accepted Answer

Question 16

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 17

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

Accepted Answer

A) True 
 B)False

Question 18

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 19

Name the complex ion [Co(H2O)4Cl2]+.

Accepted Answer

tetraaquod

Question 20

In the complex ion [Co(en)2Br2]+, the oxidation number of Co is

Accepted Answer

A) +1. 
B) +2. 
C) +3. 
D) -2. 
E) -1. 
A) +1. 
B) +2. 
C) +3. 
D) -2. 
E) -1.

Exam 20: The Chemistry of Coordination Compounds

Name the complex ion [CuCl3Br(NH3)2]2-.

Write the chemical formula of triammineaquodichlorochromium(III)chloride.

Consider the [CoCl6]4- ion. Which response includes all the following statements that are true and no false statements? I. The oxidation number of Co is -4. II. The coordination number of cobalt is 6. III. It is paramagnetic. IV. It is a low-spin complex.

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

The total number of electrons in the 3d orbitals of Cr3+ is

Which response gives the correct coordination number (C.N.)and oxidation number (O.N.)of the transition metal atom in [Co(NH3)2(H2O)2Cl2]+?

Cis-trans isomerism is exhibited by which one of these ions?

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

Two complex ions containing Ni are [Ni(NH3)6]2+, which is blue, and [Ni(en)3]2+, which is purple. Which one of these statements is true?

In the complex ion [ML6]n+, Mn+ has seven 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 systematic name of the coordination compound K2[Co(H2O)2I4] is potassium diaquotetraiodocobaltate(II).

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

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

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

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

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

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

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

Name the complex ion [Co(H2O)4Cl2]+.

In the complex ion [Co(en)2Br2]+, the oxidation number of Co is

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

Name the complex ion [CuCl₃Br(NH₃)₂]^2-.

Consider the [CoCl₆]^4- ion. Which response includes all the following statements that are true and no false statements? I. The oxidation number of Co is -4. II. The coordination number of cobalt is 6. III. It is paramagnetic. IV. It is a low-spin complex.

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

The total number of electrons in the 3d orbitals of Cr³⁺ is

Which response gives the correct coordination number (C.N.)and oxidation number (O.N.)of the transition metal atom in [Co(NH₃)₂(H₂O)₂Cl₂]⁺?

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

Two complex ions containing Ni are [Ni(NH₃)₆]²⁺, which is blue, and [Ni(en)₃]²⁺, which is purple. Which one of these statements is true?

In the complex ion [ML₆]ⁿ⁺, Mⁿ⁺ has seven 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 systematic name of the coordination compound K₂[Co(H₂O)₂I₄] is potassium diaquotetraiodocobaltate(II).

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

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

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

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

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

Name the complex ion [Co(H₂O)₄Cl₂]⁺.

In the complex ion [Co(en)₂Br₂]⁺, the oxidation number of Co is