Question 1

What is a siderophore?

Accepted Answer

a ligand that forms an extremely stable water-soluble complex,such as ferrichrome,with iron

Question 2

Complexes containing metals with d10 electron configurations are typically ________.

Accepted Answer

A) violet 
B) blue 
C) green 
D) yellow 
E) white/colorless 
A) violet 
B) blue 
C) green 
D) yellow 
E) white/colorless E

Question 3

What is the coordination number of cobalt in [Co(NH3)5Cl](NO3)2?

Accepted Answer

A) 12 
B) 8 
C) 4 
D) 2 
E) 6 
A) 12 
B) 8 
C) 4 
D) 2 
E) 6 E

Question 4

Metals with ________ electron configurations characteristically form diamagnetic,square planar complexes.

Accepted Answer

A) d0 
B) d9 
C) d6 
D) d8 
E) d10 
A) d0 
B) d9 
C) d6 
D) d8 
E) d10

Question 5

How can high-spin and low-spin transition metal complexes be distinguished from each other?

Accepted Answer

Magnetic properties

Question 6

What is the coordination number of the iron atom in CaNa[Fe(CN)6]?

Accepted Answer

Question 7

What is the ligand in Ca3[Fe(CN)6]2?

Accepted Answer

A) Ca2+ 
B) Fe3+ 
C) CN- 
D) Fe(CN)63- 
E) Fe2+ 
A) Ca2+ 
B) Fe3+ 
C) CN- 
D) Fe(CN)63- 
E) Fe2+

Question 8

The chelate effect must always occur with positive enthalpy change.

Accepted Answer

A) True 
 B)False

Question 9

The most common coordination numbers are ________.

Accepted Answer

The answer of The most common coordination numbers are ________....

Question 10

The number of "free" chloride ions in an ionic coordination compound can be determined by treating the compound with ________.

Accepted Answer

The answer of The number of "free" chloride ions in...

Question 11

A racemic mixture is ________.

Accepted Answer

A) an equal mixture of both enantiomers of an optically active species 
B) a mixture of an optically active species with an optically inactive species 
C) an equal mixture of cis- and trans-isomers 
D) a mixture of metal ions and ligands in equilibrium 
E) a mixture of structural isomers 
A) an equal mixture of both enantiomers of an optically active species 
B) a mixture of an optically active species with an optically inactive species 
C) an equal mixture of cis- and trans-isomers 
D) a mixture of metal ions and ligands in equilibrium 
E) a mixture of structural isomers

Question 12

Which one of the following complexes can exhibit geometrical isomerism?

Accepted Answer

A) [Pt(NH3)2Cl2] (square planar) 
B) [Zn(NH3)2Cl2] (tetrahedral) 
C) [Cu(NH3)4]2+ (square planar) 
D) [Cu(NH3)5Cl]2+ (octahedral) 
E) All of the above can exhibit geometrical isomerism. 
A) [Pt(NH3)2Cl2] (square planar) 
B) [Zn(NH3)2Cl2] (tetrahedral) 
C) [Cu(NH3)4]2+ (square planar) 
D) [Cu(NH3)5Cl]2+ (octahedral) 
E) All of the above can exhibit geometrical isomerism.

Question 13

A metal complex absorbs light mainly at 420 nm.What is the color of the complex?

Accepted Answer

A) green 
B) yellow 
C) red 
D) orange 
E) purple 
A) green 
B) yellow 
C) red 
D) orange 
E) purple

Question 14

How many iron atoms are coordinated in a hemoglobin molecule?

Accepted Answer

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

Question 15

What is the oxidation number of Fe in [Fe(CN)5]3-?

Accepted Answer

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

Question 16

Non superimposable isomers are ________ isomers.

Accepted Answer

optical,ch

Question 17

Six-coordinate complexes generally have ________ geometry.

Accepted Answer

The answer of Six-coordinate complexes generally have ________ geometry....

Question 18

What is the oxidation number of chromium in Cr[(NH3)4Cl2]Cl?

Accepted Answer

A) -3 
B) +3 
C) +2 
D) -2 
E) 0 
A) -3 
B) +3 
C) +2 
D) -2 
E) 0

Question 19

How many bonds can carbonate ion form to a metal ion?

Accepted Answer

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

Question 20

Formation of a complex species of Mn+ metal ion with ligands often ________.

Accepted Answer

A) "masks" original chemical properties of both the Mn+ ion and the ligands 
B) reduces availability of the free Mn+ ions in solution 
C) may cause changes in the ease with which Mn+ is reduced or oxidized 
D) alters original physical properties of Mn+ 
E) all of the above 
A) "masks" original chemical properties of both the Mn+ ion and the ligands 
B) reduces availability of the free Mn+ ions in solution 
C) may cause changes in the ease with which Mn+ is reduced or oxidized 
D) alters original physical properties of Mn+ 
E) all of the above

Exam 23: Transition Metals and Coordination Chemistry

What is a siderophore?

Complexes containing metals with d10 electron configurations are typically ________.

What is the coordination number of cobalt in [Co(NH3)5Cl](NO3)2?

Metals with ________ electron configurations characteristically form diamagnetic,square planar complexes.

How can high-spin and low-spin transition metal complexes be distinguished from each other?

What is the coordination number of the iron atom in CaNa[Fe(CN)6]?

What is the ligand in Ca3[Fe(CN)6]2?

The chelate effect must always occur with positive enthalpy change.

The most common coordination numbers are ________.

The number of "free" chloride ions in an ionic coordination compound can be determined by treating the compound with ________.

A racemic mixture is ________.

Which one of the following complexes can exhibit geometrical isomerism?

A metal complex absorbs light mainly at 420 nm.What is the color of the complex?

How many iron atoms are coordinated in a hemoglobin molecule?

What is the oxidation number of Fe in [Fe(CN)5]3-?

Non superimposable isomers are ________ isomers.

Six-coordinate complexes generally have ________ geometry.

What is the oxidation number of chromium in Cr[(NH3)4Cl2]Cl?

How many bonds can carbonate ion form to a metal ion?

Formation of a complex species of Mn+ metal ion with ligands often ________.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

The Chemistry of Life: Organic and Biological Chemistry

Filters

Complexes containing metals with d¹⁰ electron configurations are typically ________.

What is the coordination number of cobalt in [Co(NH₃)₅Cl](NO₃)₂?

What is the coordination number of the iron atom in CaNa[Fe(CN)₆]?

What is the ligand in Ca₃[Fe(CN)₆]₂?

What is the oxidation number of Fe in [Fe(CN)₅]^3-?

What is the oxidation number of chromium in Cr[(NH₃)₄Cl₂]Cl?

Formation of a complex species of Mⁿ⁺ metal ion with ligands often ________.