Question 1

Which of the following ligands could participate in linkage isomerism?

Accepted Answer

A)  NH3 
B) H2O 
C) NH4+ 
D) NO2- 
E)  ethylenediamine 
A)  NH3 
B) H2O 
C) NH4+ 
D) NO2- 
E)  ethylenediamine

Question 2

A feature of transition metal chemistry is that these elements exhibit multiple oxidation states. Which one of the following elements exhibits the smallest number of different oxidation states?

Accepted Answer

A)  Ti 
B)  Cr 
C)  Mn 
D)  Co 
E)  Zn 
A)  Ti 
B)  Cr 
C)  Mn 
D)  Co 
E)  Zn

Question 3

Which of the following ligands is most likely to form a high spin octahedral complex with cobalt(II)?

Accepted Answer

A)  CN- 
B)  en (ethylenediamine) 
C)  NO2- 
D)  CO 
E)  I? 
A)  CN- 
B)  en (ethylenediamine) 
C)  NO2- 
D)  CO 
E)  I?

Question 4

Which of the oxidation states of chromium has the largest valence-state electronegativity?

Accepted Answer

A)  chromium(0) 
B) chromium(II) 
C) chromium(III) 
D) chromium(IV) 
E) chromium(VI) 
A)  chromium(0) 
B) chromium(II) 
C) chromium(III) 
D) chromium(IV) 
E) chromium(VI)

Question 5

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

Question 6

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

Question 7

Which of the following coordination numbers applies to octahedral complexes?

Accepted Answer

A)  4 
B)  5 
C)  6 
D)  8 
E)  None of these choices are correct. 
A)  4 
B)  5 
C)  6 
D)  8 
E)  None of these choices are correct.

Question 8

Aluminum reacts with oxygen in the air to form a protective oxide coating. Silver also reactswith compounds in air to form a black coating. What substance is formed?

Accepted Answer

A)  silver oxide 
B) silver chloride 
C) silver sulfide 
D) silver carbonate 
E) silver nitride 
A)  silver oxide 
B) silver chloride 
C) silver sulfide 
D) silver carbonate 
E) silver nitride

Question 9

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 are correct. 
A) [Co(H2O)4Cl2]+ 
B) [Pt(NH3)Br3]- 
C) [Pt(en)Cl2] 
D) [Pt(NH3)3Cl]+ 
E) None of these choices are correct.

Question 10

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 these 
A)  Geometric 
B)  Optical 
C)  Linkage 
D)  Coordination 
E)  More than one of these

Question 11

The maximum oxidation state of an element in the first transition series never exceeds its group number.

Accepted Answer

A) True 
 B)False

Question 12

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 are correct. 
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 are correct.

Question 13

Which of the following ions is least likely to form colored compounds?

Accepted Answer

A)  Mn2+ 
B)  Cr5+ 
C)  Sc3+ 
D)  Fe3+ 
E)  Co2+ 
A)  Mn2+ 
B)  Cr5+ 
C)  Sc3+ 
D)  Fe3+ 
E)  Co2+

Question 14

In the presence of a strong octahedral ligand field, the number of unpaired electrons in Co(III) will be

Accepted Answer

A)  0. 
B)  2. 
C)  4. 
D)  6. 
E)  None of these choices are correct. 
A)  0. 
B)  2. 
C)  4. 
D)  6. 
E)  None of these choices are correct.

Question 15

Octahedral complexes can exhibit geometric, optical, and linkage isomerism.

Accepted Answer

A) True 
 B)False

Question 16

The ground state electronic configuration of Zn2+ is

Accepted Answer

A) [Ar]4s23d8. 
B) [Ar]4s23d10. 
C) [Ar]4s13d9. 
D) [Ar]3d10. 
E) [Ar]3d8. 
A) [Ar]4s23d8. 
B) [Ar]4s23d10. 
C) [Ar]4s13d9. 
D) [Ar]3d10. 
E) [Ar]3d8.

Question 17

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. 
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.

Question 18

In the formation of a transition metal complex, the central metal atom or ion acts as

Accepted Answer

A)  an Arrhenius acid. 
B) a Bronsted-Lowry acid. 
C) a Bronsted-Lowry base. 
D) a Lewis acid. 
E) a Lewis base. 
A)  an Arrhenius acid. 
B) a Bronsted-Lowry acid. 
C) a Bronsted-Lowry base. 
D) a Lewis acid. 
E) a Lewis base.

Question 19

A characteristic of ligands is that

Accepted Answer

A)  they are Lewis acids. 
B) they are Lewis bases. 
C) they are ions. 
D) they are electron pair acceptors. 
E) they are Brønsted-Lowry acids. 
A)  they are Lewis acids. 
B) they are Lewis bases. 
C) they are ions. 
D) they are electron pair acceptors. 
E) they are Brønsted-Lowry acids.

Question 20

What is the highest possible oxidation state for molybdenum, Mo?

Accepted Answer

A)  +2 
B)  +4 
C)  +6 
D)  +8 
E)  None of these choices are correct. 
A)  +2 
B)  +4 
C)  +6 
D)  +8 
E)  None of these choices are correct.

Exam 23: Transition Elements and Their Coordination Compounds

Which of the following ligands could participate in linkage isomerism?

A feature of transition metal chemistry is that these elements exhibit multiple oxidation states. Which one of the following elements exhibits the smallest number of different oxidation states?

Which of the following ligands is most likely to form a high spin octahedral complex with cobalt(II)?

Which of the oxidation states of chromium has the largest valence-state electronegativity?

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

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

Which of the following coordination numbers applies to octahedral complexes?

Aluminum reacts with oxygen in the air to form a protective oxide coating. Silver also reactswith compounds in air to form a black coating. What substance is formed?

Which of the following species could exist as isomers?

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

The maximum oxidation state of an element in the first transition series never exceeds its group number.

Write the formula for sodium tetracyanonickelate(II).

Which of the following ions is least likely to form colored compounds?

In the presence of a strong octahedral ligand field, the number of unpaired electrons in Co(III) will be

Octahedral complexes can exhibit geometric, optical, and linkage isomerism.

The ground state electronic configuration of Zn2+ is

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?

In the formation of a transition metal complex, the central metal atom or ion acts as

A characteristic of ligands is that

What is the highest possible oxidation state for molybdenum, Mo?

Keys to Studying Chemistry Definitions, Units, and Problem Solving

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces Liquids, Solids, and Phase Changes

The Properties of Mixtures Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics Rates and Mechanisms of Chemical Reactions

Equilibrium the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics Entropy, Free Energy, and Reaction Direction

Electrochemistry Chemical Change and Electrical Work

The Elements in Nature and Industry

Nuclear Reactions and Their Applications

Filters

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

The ground state electronic configuration of Zn²⁺ is