Question 1

Which one of the following complex ions will be paramagnetic?

Accepted Answer

A) [Fe(H2O)6]2+ (low spin) 
B) [Fe(H2O)6]3+ (low spin) 
C) [Co(H2O)6]3+ (low spin) 
D) [Zn(H2O)4]2+ 
E) [Zn(NH3)4]2+ 
A) [Fe(H2O)6]2+ (low spin) 
B) [Fe(H2O)6]3+ (low spin) 
C) [Co(H2O)6]3+ (low spin) 
D) [Zn(H2O)4]2+ 
E) [Zn(NH3)4]2+

Question 2

Which one of the following is the correct formula for potassium diaquatetrachloromolybdate (III)?

Accepted Answer

A) K2[Mo(H2O)2Cl4] 
B) K[Mo(H2O)2Cl2]Cl2 
C) K[Mo(H2O)2Cl4] 
D) Mo[K(H2O)2]Cl4 
E) K3[Mo(H2O)2Cl4] 
A) K2[Mo(H2O)2Cl4] 
B) K[Mo(H2O)2Cl2]Cl2 
C) K[Mo(H2O)2Cl4] 
D) Mo[K(H2O)2]Cl4 
E) K3[Mo(H2O)2Cl4]

Question 3

How many d electrons are in the cobalt ion of K3[Co(CN)6]?

Accepted Answer

A) 3 
B) 5 
C) 6 
D) 7 
E) 4 
A) 3 
B) 5 
C) 6 
D) 7 
E) 4

Question 4

Complexes containing metals with d10 electron configurations are typically ________.

Accepted Answer

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

Question 5

The two more common oxidation states of chromium are ________ and ________.

Accepted Answer

The answer of The two more common oxidation states of...

Question 6

What is the charge on the complex ion in Mg2[FeCl6]?

Accepted Answer

A) 2- 
B) 2+ 
C) 3- 
D) 3+ 
E) 4- 
A) 2- 
B) 2+ 
C) 3- 
D) 3+ 
E) 4-

Question 7

What is the charge on the complex ion in Ca2[Fe(CN)6]?

Accepted Answer

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

Question 8

The correct name for [Ni(NH3)6](NO3)3 ________.

Accepted Answer

A) dinitrohexaamminenickel (II) 
B) hexaamminenickel (III)trinitrate 
C) dinitrohexaamminenickelate (III) 
D) hexaamminenickel (II)nitrate 
E) hexaamminenickel (III)nitrate 
A) dinitrohexaamminenickel (II) 
B) hexaamminenickel (III)trinitrate 
C) dinitrohexaamminenickelate (III) 
D) hexaamminenickel (II)nitrate 
E) hexaamminenickel (III)nitrate

Question 9

What is meant by the prefix tetrakis-, and when is it used?

Accepted Answer

It means 4 and is us

Question 10

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 11

The color of hemoglobin changes from purple to red when water displaces oxygen on the molecule.

Accepted Answer

A) True 
 B)False

Question 12

Diamagnetic solids ________.

Accepted Answer

A) have atoms with one or more unpaired electrons 
B) have atoms with randomly oriented magnetic moments 
C) show very slight magnetic character when placed in a magnetic field 
D) have atoms with strongly aligned electrons when placed in a magnetic field 
E) both a and d 
A) have atoms with one or more unpaired electrons 
B) have atoms with randomly oriented magnetic moments 
C) show very slight magnetic character when placed in a magnetic field 
D) have atoms with strongly aligned electrons when placed in a magnetic field 
E) both a and d

Question 13

What is the purpose of adding sodium tripolyphosphate to a detergent?

Accepted Answer

to sequester the metal ions in

Question 14

Which element has the largest bonding atomic radius?

Accepted Answer

A) scandium 
B) titanium 
C) vanadium 
D) chromium 
E) manganese 
A) scandium 
B) titanium 
C) vanadium 
D) chromium 
E) manganese

Question 15

What is the purpose of adding EDTA to prepared foods?

Accepted Answer

A) to keep ions such as Ca2+ in solution so the foods look good 
B) to complex trace metal ions that catalyze decomposition reactions 
C) to complex iron (III)ions so they can catalyze protein decomposition on cooking 
D) to aid in browning of the surface during cooking 
E) to prevent dissolution of the container in the food when stored for long periods of time 
A) to keep ions such as Ca2+ in solution so the foods look good 
B) to complex trace metal ions that catalyze decomposition reactions 
C) to complex iron (III)ions so they can catalyze protein decomposition on cooking 
D) to aid in browning of the surface during cooking 
E) to prevent dissolution of the container in the food when stored for long periods of time

Question 16

A complex that absorbs light at 700 nm will appear ________.

Accepted Answer

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

Question 17

What is the oxidation number of the central metal in [Mo(H2O)5NO3]Cl2

Accepted Answer

Question 18

The coordination sphere of a complex consists of ________.

Accepted Answer

A) the central metal ion only 
B) the ligands 
C) the central metal ion and the ligands bonded to it 
D) the primary and secondary valencies 
E) coordination and steric numbers 
A) the central metal ion only 
B) the ligands 
C) the central metal ion and the ligands bonded to it 
D) the primary and secondary valencies 
E) coordination and steric numbers

Question 19

What metal is complexed in chlorophyll?

Accepted Answer

A) iron 
B) chromium 
C) manganese 
D) vanadium 
E) magnesium 
A) iron 
B) chromium 
C) manganese 
D) vanadium 
E) magnesium

Question 20

Complexes containing metals with d10 electron configurations are typically colorless because ________.

Accepted Answer

A) there is no d electron that can be promoted via the absorption of visible light 
B) the empty d orbitals absorb all of the visible wavelengths 
C) there are no d electrons to form bonds to ligands 
D) a complex must be charged to be colored 
E) d electrons must be emitted by the complex in order for it to appear colored 
A) there is no d electron that can be promoted via the absorption of visible light 
B) the empty d orbitals absorb all of the visible wavelengths 
C) there are no d electrons to form bonds to ligands 
D) a complex must be charged to be colored 
E) d electrons must be emitted by the complex in order for it to appear colored

Exam 23: Transition Metals and Coordination Chemistry

Which one of the following complex ions will be paramagnetic?

Which one of the following is the correct formula for potassium diaquatetrachloromolybdate (III)?

How many d electrons are in the cobalt ion of K3[Co(CN)6]?

Complexes containing metals with d10 electron configurations are typically ________.

The two more common oxidation states of chromium are ________ and ________.

What is the charge on the complex ion in Mg2[FeCl6]?

What is the charge on the complex ion in Ca2[Fe(CN)6]?

The correct name for [Ni(NH3)6](NO3)3 ________.

What is meant by the prefix tetrakis-, and when is it used?

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

The color of hemoglobin changes from purple to red when water displaces oxygen on the molecule.

Diamagnetic solids ________.

What is the purpose of adding sodium tripolyphosphate to a detergent?

Which element has the largest bonding atomic radius?

What is the purpose of adding EDTA to prepared foods?

A complex that absorbs light at 700 nm will appear ________.

What is the oxidation number of the central metal in [Mo(H2O)5NO3]Cl2

The coordination sphere of a complex consists of ________.

What metal is complexed in chlorophyll?

Complexes containing metals with d10 electron configurations are typically colorless because ________.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

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

How many d electrons are in the cobalt ion of K₃[Co(CN)₆]?

Complexes containing metals with d¹⁰ electron configurations are typically ________.

The two more common oxidation states of chromium are and .

What is the charge on the complex ion in Mg₂[FeCl₆]?

What is the charge on the complex ion in Ca₂[Fe(CN)₆]?

The correct name for [Ni(NH₃)₆](NO₃)₃ ________.

What is the oxidation number of the central metal in [Mo(H₂O)₅NO₃]Cl₂

Complexes containing metals with d¹⁰ electron configurations are typically colorless because ________.