Question 1

A ligand with a single donor atom is called __________.

Accepted Answer

A) a chelon 
B) a chelate 
C) polydentate 
D) monodentate 
E) bidentate 
A) a chelon 
B) a chelate 
C) polydentate 
D) monodentate 
E) bidentate

Question 2

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

Question 3

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 4

Green and orange are complementary colors.

Accepted Answer

A) True 
 B)False

Question 5

The coordination numbers of cobalt(III)and of chromium(III)in their complexes are always __________.

Accepted Answer

A) 4 
B) 5 
C) 2 
D) 3 
E) 6 
A) 4 
B) 5 
C) 2 
D) 3 
E) 6

Question 6

Coordination sphere isomers

Accepted Answer

A) have the same molecular formula and coordination number. 
B) have the same molecular formula but different coordination numbers. 
C) have different molecular formulas but the same coordination number. 
D) have different molecular formulas and different coordination numbers. 
E) are the same as resonance structures. 
A) have the same molecular formula and coordination number. 
B) have the same molecular formula but different coordination numbers. 
C) have different molecular formulas but the same coordination number. 
D) have different molecular formulas and different coordination numbers. 
E) are the same as resonance structures.

Question 7

Two compounds have the same formula and contain an SCN- ligand. In one compound the SCN- ligand is bonded to the metal atom via the N atom and in the other it is bonded via the S atom. These two compounds are examples of __________ isomers.

Accepted Answer

Question 8

What is the oxidation number of cobalt in [Co(NH3)4F2]?

Accepted Answer

A) -3 
B) +2 
C) +1 
D) +3 
E) +6 
A) -3 
B) +2 
C) +1 
D) +3 
E) +6

Question 9

In what two ways can an object appear blue?

Accepted Answer

absorb all wavelengths except

Question 10

What are the respective central-metal oxidation state, coordination number, and overall charge on the complex ion in Na2[Cr(NH3)2 (NCS)4]?

Accepted Answer

A) +3; 6; -1 
B) +3; 6; +1 
C) +2; 6; -2 
D) +2; 4; -1 
E) +1; 6; -2 
A) +3; 6; -1 
B) +3; 6; +1 
C) +2; 6; -2 
D) +2; 4; -1 
E) +1; 6; -2

Question 11

What is the metal ion in the porphyrin of heme?

Accepted Answer

A) iron 
B) calcium 
C) molybdenum 
D) magnesium 
E) chlorophyll 
A) iron 
B) calcium 
C) molybdenum 
D) magnesium 
E) chlorophyll

Question 12

A substance is __________ if its ions or atoms have one or more unpaired electrons.

Accepted Answer

The answer of A substance is __________ if its ions...

Question 13

What two oxidation states are more frequently observed in the first transition series than in the third?

Accepted Answer

A) +3 and +7 
B) +2 and +3 
C) +2 and +7 
D) +5 and +6 
E) +3 and +5 
A) +3 and +7 
B) +2 and +3 
C) +2 and +7 
D) +5 and +6 
E) +3 and +5

Question 14

Chalcocite, chalcopyrite, and malachite are sources of which metal?

Accepted Answer

A) manganese 
B) copper 
C) titanium 
D) iron 
E) zinc 
A) manganese 
B) copper 
C) titanium 
D) iron 
E) zinc

Question 15

The chelate effect is enhanced by polydentate ligand binding because of the change in __________.

Accepted Answer

The answer of The chelate effect is enhanced by polydentate...

Question 16

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 17

Diamagmetic 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 18

The correct name for [Al(H2O)2(OH-)4]- is __________.

Accepted Answer

A) diwaterquatrahydroxyaluminum 
B) tetrahydroxydiaquaaluminum (III) 
C) diaquatetrahydroxoaluminate 
D) aluminum (IV)hydroxide dihydrate 
E) none of the above 
A) diwaterquatrahydroxyaluminum 
B) tetrahydroxydiaquaaluminum (III) 
C) diaquatetrahydroxoaluminate 
D) aluminum (IV)hydroxide dihydrate 
E) none of the above

Question 19

What are the donor atoms in ferrichrome and how many of them are in one molecule?

Accepted Answer

A) Cr, 5 
B) N, 4 
C) O, 6 
D) Fe, 4 
E) S, 6 
A) Cr, 5 
B) N, 4 
C) O, 6 
D) Fe, 4 
E) S, 6

Question 20

Based on entropy considerations alone, which homogeneous aqueous equilibrium would be expected to lie to the right?

Accepted Answer

A) AgI2- + 2Br- ⇔ AgBr2- + 2I- 
B) Ni(H2NC2H4NH2)32+ + 6NH3 ⇔ Ni(NH3)62+ + 3H2NC2H4NH2 
C) CoCl42+ + 6H2O ⇔ Co(H2O)62+ + 4Cl- 
D) Fe(NH3)62+ + C20H10N42- ⇔ Fe(NH3)2(C20H10N4)+ 4NH3 
E) Cu(NH3)42+ + 6H2O ⇔ Cu(H2O)62+ + 4NH3 
A) AgI2- + 2Br- ⇔ AgBr2- + 2I- 
B) Ni(H2NC2H4NH2)32+ + 6NH3 ⇔ Ni(NH3)62+ + 3H2NC2H4NH2 
C) CoCl42+ + 6H2O ⇔ Co(H2O)62+ + 4Cl- 
D) Fe(NH3)62+ + C20H10N42- ⇔ Fe(NH3)2(C20H10N4)+ 4NH3 
E) Cu(NH3)42+ + 6H2O ⇔ Cu(H2O)62+ + 4NH3

Exam 23: Transition Metals and Coordination Chemistry

A ligand with a single donor atom is called __________.

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

What is the purpose of adding EDTA to prepared foods?

Green and orange are complementary colors.

The coordination numbers of cobalt(III)and of chromium(III)in their complexes are always __________.

Coordination sphere isomers

Two compounds have the same formula and contain an SCN- ligand. In one compound the SCN- ligand is bonded to the metal atom via the N atom and in the other it is bonded via the S atom. These two compounds are examples of __________ isomers.

What is the oxidation number of cobalt in [Co(NH3)4F2]?

In what two ways can an object appear blue?

What are the respective central-metal oxidation state, coordination number, and overall charge on the complex ion in Na2[Cr(NH3)2 (NCS)4]?

What is the metal ion in the porphyrin of heme?

A substance is __________ if its ions or atoms have one or more unpaired electrons.

What two oxidation states are more frequently observed in the first transition series than in the third?

Chalcocite, chalcopyrite, and malachite are sources of which metal?

The chelate effect is enhanced by polydentate ligand binding because of the change in __________.

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

Diamagmetic solids __________.

The correct name for [Al(H2O)2(OH-)4]- is __________.

What are the donor atoms in ferrichrome and how many of them are in one molecule?

Based on entropy considerations alone, which homogeneous aqueous equilibrium would be expected to lie to the right?

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

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

Two compounds have the same formula and contain an SCN^- ligand. In one compound the SCN^- ligand is bonded to the metal atom via the N atom and in the other it is bonded via the S atom. These two compounds are examples of __________ isomers.

What is the oxidation number of cobalt in [Co(NH₃)₄F₂]?

What are the respective central-metal oxidation state, coordination number, and overall charge on the complex ion in Na₂[Cr(NH₃)₂ (NCS)₄]?

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

The correct name for [Al(H₂O)₂(OH^-)₄]^-is __________.