Question 1

Which of the following complexes has no geometric isomers?

Accepted Answer

A) [Pt(NH3)4F2] 
B) [Pt(NH3)F5]-3  
C) [Co(NH3)4F2]+  
D) [Co(NH3)3F3] 
E) [Co(NH3)2F4]-  
A) [Pt(NH3)4F2] 
B) [Pt(NH3)F5]-3  
C) [Co(NH3)4F2]+  
D) [Co(NH3)3F3] 
E) [Co(NH3)2F4]-  B

Question 2

Give the correct name for [Fe(H2O)4(OH)2]+.

Accepted Answer

A) diaquotetrahydroxoiron(III) 
B) tetrahydroxodiaquoferrate(III) 
C) hydrated iron hydroxide 
D) tetrawaterdihydroxoiron(III) 
E) tetraaquadihydroxoiron(III) 
A) diaquotetrahydroxoiron(III) 
B) tetrahydroxodiaquoferrate(III) 
C) hydrated iron hydroxide 
D) tetrawaterdihydroxoiron(III) 
E) tetraaquadihydroxoiron(III) E

Question 3

The overall formation constant can be calculated by multiplying the constant for each step of the formation.

Accepted Answer

A) True 
 B)False  True

Question 4

Give the correct name for [Fe(CN)6]4-.

Accepted Answer

A) hexayanoiron(II) 
B) iron hexacyanide 
C) hexacyanoferrate(II) 
D) hexacyanide iron(II) 
E) hexacyanoferrate(III) 
A) hexayanoiron(II) 
B) iron hexacyanide 
C) hexacyanoferrate(II) 
D) hexacyanide iron(II) 
E) hexacyanoferrate(III)

Question 5

Some wavelengths of light are the correct energy to be used to promote electrons to higher energy levels and are thus lost from white light.The loss of these wavelengths causes solutions of transition elements to be colored.

Accepted Answer

A) True 
 B)False

Question 6

Choose the INCORRECT formula/name combination for ligands.

Accepted Answer

A) H2O / aqua 
B) NH3 / ammine 
C) CO / carbonyl 
D) NO / nitrito-N- 
E) CH3NH2 / methylamine 
A) H2O / aqua 
B) NH3 / ammine 
C) CO / carbonyl 
D) NO / nitrito-N- 
E) CH3NH2 / methylamine

Question 7

Choose the INCORRECT statement.

Accepted Answer

A) One popular chelating agent is EDTA. 
B) [Cr(NH3)4Br]Cl and [Cr(NH3)4Cl]Br are examples of ionization isomerism. 
C) Linkage isomers differ in the spatial arrangements among the ligands. 
D) A tetrahedral complex cannot have a geometric isomer. 
E) Enantiomers are optical isomers. 
A) One popular chelating agent is EDTA. 
B) [Cr(NH3)4Br]Cl and [Cr(NH3)4Cl]Br are examples of ionization isomerism. 
C) Linkage isomers differ in the spatial arrangements among the ligands. 
D) A tetrahedral complex cannot have a geometric isomer. 
E) Enantiomers are optical isomers.

Question 8

Which of the following magnetic/geometric descriptions is most likely for the [ZnCl4]2- ion?

Accepted Answer

A) diamagnetic/octahedral 
B) paramagnetic/tetrahedral 
C) paramagnetic/square planar 
D) diamagnetic/tetrahedral 
E) diamagnetic/square planar 
A) diamagnetic/octahedral 
B) paramagnetic/tetrahedral 
C) paramagnetic/square planar 
D) diamagnetic/tetrahedral 
E) diamagnetic/square planar

Question 9

Which of the following ligands cannot act as a chelating agent?

Accepted Answer

A) nitrite ion 
B) ethylenediamine 
C) ethylenediaminetetracetate ion 
D) hydrazine 
E) oxalate ion 
A) nitrite ion 
B) ethylenediamine 
C) ethylenediaminetetracetate ion 
D) hydrazine 
E) oxalate ion

Question 10

Isomers such as the two forms of the ion [Co(NH3)2Cl4]- that differ only in the way the atoms are oriented in space are called,in general ________.

Accepted Answer

A) ionization isomers 
B) crystal field isomers 
C) hybridization isomers 
D) optical isomers 
E) cis-trans isomers 
A) ionization isomers 
B) crystal field isomers 
C) hybridization isomers 
D) optical isomers 
E) cis-trans isomers

Question 11

Coordination isomerism could be shown by:

Accepted Answer

A) Li[AlH4] 
B) [Ag(NH3)2][CuCl2] 
C) [Co(NH3)4Cl2]Br 
D) [Pt(H2O)4Cl2] 
E) [Fe(CN)6](NH3)3  
A) Li[AlH4] 
B) [Ag(NH3)2][CuCl2] 
C) [Co(NH3)4Cl2]Br 
D) [Pt(H2O)4Cl2] 
E) [Fe(CN)6](NH3)3

Question 12

In the cation [CrCl2(H2O)4]+,the oxidation state of chromium and its coordination number,respectively,are ________.

Accepted Answer

A) -3 and two 
B) +3 and six 
C) 0 and four 
D) +2 and six 
E) -4 and six 
A) -3 and two 
B) +3 and six 
C) 0 and four 
D) +2 and six 
E) -4 and six

Question 13

Of the following complex ions: [CrCl(NH3)5]2+,[Cr(NH3)6]3+,[CrCl(H2O)5]2+,[Cr(H2O)6]3+,one appears pink,one yellow,one blue-green and one violet.Which is blue-green?

Accepted Answer

A) [Cr(NH3)6]3+ 
B) [CrCl(NH3)5]2+ 
C) [CrCl(H2O)5]2+ 
D) [Cr(H2O)6]3+ 
E) both [CrCl(H2O)5]2+ and [CrCl(NH3)5]2+ 
A) [Cr(NH3)6]3+ 
B) [CrCl(NH3)5]2+ 
C) [CrCl(H2O)5]2+ 
D) [Cr(H2O)6]3+ 
E) both [CrCl(H2O)5]2+ and [CrCl(NH3)5]2+

Question 14

Which of the following can function as a chelating agent?

Accepted Answer

A) SH- 
B) H2O 
C) H2NCH2CO2-   
D) SCN - 
A) SH- 
B) H2O 
C) H2NCH2CO2-   
D) SCN -

Question 15

Choose the INCORRECT statement about coordination nomenclature.

Accepted Answer

A) Molecular ligands carry the molecule's name. 
B) The number of ligands is specified by a superscript. 
C) Ligands are named in alphabetical order. 
D) A Roman numeral designates the oxidation state of the metal ion. 
E) Complex anions have an ate ending on the central metal's name. 
A) Molecular ligands carry the molecule's name. 
B) The number of ligands is specified by a superscript. 
C) Ligands are named in alphabetical order. 
D) A Roman numeral designates the oxidation state of the metal ion. 
E) Complex anions have an ate ending on the central metal's name.

Question 16

Which complex ion possesses the largest number of unpaired electrons?

Accepted Answer

A) [CoCl4]2-  
B) [Cr(NH3)6]2+  
C) [Cu(NH3)4]2+  
D) [Mn(CN)6]4-  
E) [Fe(H2O)6]3+  
A) [CoCl4]2-  
B) [Cr(NH3)6]2+  
C) [Cu(NH3)4]2+  
D) [Mn(CN)6]4-  
E) [Fe(H2O)6]3+

Question 17

Choose the correct shape,weak or strong field,and number of unpaired electrons for [CoI6]3-.

Accepted Answer

A) tetrahedral,strong,2 
B) tetrahedral,weak,4 
C) square planar,strong,0 
D) octahedral,strong,5 
E) octahedral,weak,4 
A) tetrahedral,strong,2 
B) tetrahedral,weak,4 
C) square planar,strong,0 
D) octahedral,strong,5 
E) octahedral,weak,4

Question 18

Ligands approaching in an square planar pattern cause some orbitals to be raised in energy.How many orbitals are on the highest energy level?

Accepted Answer

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

Question 19

Give the correct name for [Al(H2O)4]3+.

Accepted Answer

A) hydrated aluminum 
B) aluminum hydrate 
C) tetraaquoaluminate(VI) 
D) tetraaquaaluminum(III) 
E) tetrawateraluminum(IV) 
A) hydrated aluminum 
B) aluminum hydrate 
C) tetraaquoaluminate(VI) 
D) tetraaquaaluminum(III) 
E) tetrawateraluminum(IV)

Question 20

What is the approximate concentration of free Ni2+(aq)remaining at equilibrium in a solution prepared by mixing 5.0 mL of 0.10 M NiCl(aq)2 with 5.0 mL of 2.0 M NH3(aq)? 
[The net formation constant for the hexamminenickel(II)ion is 5.5 × 108.]

Accepted Answer

A) 1.8 × 10-9 M 
B) 7.7 × 10-10 M 
C) 1.3 × 10-10 M 
D) 2.4 × 10-10 M 
E) 0.050 M 
A) 1.8 × 10-9 M 
B) 7.7 × 10-10 M 
C) 1.3 × 10-10 M 
D) 2.4 × 10-10 M 
E) 0.050 M

Exam 24: Complex Ions and Coordination Compounds

Which of the following complexes has no geometric isomers?

Give the correct name for [Fe(H2O)4(OH)2]+.

The overall formation constant can be calculated by multiplying the constant for each step of the formation.

Give the correct name for [Fe(CN)6]4-.

Some wavelengths of light are the correct energy to be used to promote electrons to higher energy levels and are thus lost from white light.The loss of these wavelengths causes solutions of transition elements to be colored.

Choose the INCORRECT formula/name combination for ligands.

Choose the INCORRECT statement.

Which of the following magnetic/geometric descriptions is most likely for the [ZnCl4]2- ion?

Which of the following ligands cannot act as a chelating agent?

Isomers such as the two forms of the ion [Co(NH3)2Cl4]- that differ only in the way the atoms are oriented in space are called,in general ________.

Coordination isomerism could be shown by:

In the cation [CrCl2(H2O)4]+,the oxidation state of chromium and its coordination number,respectively,are ________.

Of the following complex ions: [CrCl(NH3)5]2+,[Cr(NH3)6]3+,[CrCl(H2O)5]2+,[Cr(H2O)6]3+,one appears pink,one yellow,one blue-green and one violet.Which is blue-green?

Which of the following can function as a chelating agent?

Choose the INCORRECT statement about coordination nomenclature.

Which complex ion possesses the largest number of unpaired electrons?

Choose the correct shape,weak or strong field,and number of unpaired electrons for [CoI6]3-.

Ligands approaching in an square planar pattern cause some orbitals to be raised in energy.How many orbitals are on the highest energy level?

Give the correct name for [Al(H2O)4]3+.

What is the approximate concentration of free Ni2+(aq)remaining at equilibrium in a solution prepared by mixing 5.0 mL of 0.10 M NiCl(aq)2 with 5.0 mL of 2.0 M NH3(aq)? [The net formation constant for the hexamminenickel(II)ion is 5.5 × 108.]

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

The Transition Elements

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Give the correct name for [Fe(H₂O)₄(OH)₂]⁺.

Give the correct name for [Fe(CN)₆]^4-.

Which of the following magnetic/geometric descriptions is most likely for the [ZnCl₄]^2- ion?

Isomers such as the two forms of the ion [Co(NH₃)₂Cl₄]^- that differ only in the way the atoms are oriented in space are called,in general ________.

In the cation [CrCl₂(H₂O)₄]⁺,the oxidation state of chromium and its coordination number,respectively,are ________.

Of the following complex ions: [CrCl(NH₃)₅]^2+,[Cr(NH₃)₆]³⁺,[CrCl(H₂O)₅]²⁺,[Cr(H₂O)₆]³⁺,one appears pink,one yellow,one blue-green and one violet.Which is blue-green?

Choose the correct shape,weak or strong field,and number of unpaired electrons for [CoI₆]^3-.

Give the correct name for [Al(H₂O)₄]³⁺.

What is the approximate concentration of free Ni²⁺(aq)remaining at equilibrium in a solution prepared by mixing 5.0 mL of 0.10 M NiCl(aq)₂ with 5.0 mL of 2.0 M NH₃(aq)? [The net formation constant for the hexamminenickel(II)ion is 5.5 × 10⁸.]