Question 1

What is the crystal field energy level diagram for the complex [Co(CN)6]3-?

Accepted Answer

A) (
A)  
B) (
B)  
C) (
C)  
D) (
D)  
A) (
A)  
B) (
B)  
C) (
C)  
D) (
D)

Question 2

-Which of the above are monodentate ligands?

Accepted Answer

A) All are monodentate. 
B) (a)and (b) 
C) (c)and (d) 
D) None are monodentate. 
A) All are monodentate. 
B) (a)and (b) 
C) (c)and (d) 
D) None are monodentate.

Question 3

-Which group of elements,indicated by letter and shading on the periodic table above,represents the transition elements?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 4

Consider the following ethylenediamine complexes.The black sphere represents Co,gray connected spheres represent ethylenediamine,NHS1U1B12S1U1B0CHS1U1B12S1U1B0CHS1U1B12S1U1B0NHS1U1B12S1U1B0,and unshaded spheres represent Br.  
-Which complexes are chiral?

Accepted Answer

A) complexes (1),(2),and (3) 
B) complexes (1),(2),and (4) 
C) complexes (1),(3),and (4) 
D) complexes (2),(3),and (4) 
A) complexes (1),(2),and (3) 
B) complexes (1),(2),and (4) 
C) complexes (1),(3),and (4) 
D) complexes (2),(3),and (4)

Question 5

In which blocks of the periodic table are the transition series and inner transition series elements found?

Accepted Answer

A) d,p 
B) d,f 
C) s,d 
D) s,p 
A) d,p 
B) d,f 
C) s,d 
D) s,p

Question 6

Write the chemical formula for aquabromobis(ethylenediamine)chromium(III)chloride.

Accepted Answer

A) [CrBr(H2O)(en)]Cl 
B) [CrBr2(H2O)(en)]Cl2 
C) [CrBr(H2O)(en)2]Cl2 
D) [CrBr(H2O)(en)2]Cl3 
A) [CrBr(H2O)(en)]Cl 
B) [CrBr2(H2O)(en)]Cl2 
C) [CrBr(H2O)(en)2]Cl2 
D) [CrBr(H2O)(en)2]Cl3

Question 7

The third transition series metals are shown below.  
-Which has the largest atomic radius?

Accepted Answer

A) La 
B) W 
C) Os 
D) Hg 
A) La 
B) W 
C) Os 
D) Hg

Question 8

Which definition best describes isomers that are non-superimposable mirror images of each other that rotate plane polarized light to the same degree but in opposite directions?

Accepted Answer

A) diastereoisomers 
B) enantiomers 
C) linkage isomers 
D) racemic mixture 
A) diastereoisomers 
B) enantiomers 
C) linkage isomers 
D) racemic mixture

Question 9

-Which of the Co(III)complexes above are enantiomers of each other?

Accepted Answer

A) (
A) and (
B)  
B) (
C) and (
D)  
C) (
A) ,(
B) ,and (
C)  
D) (
A) ,(
B) ,(
C) ,and (
D)  
A) (
A) and (
B)  
B) (
C) and (
D)  
C) (
A) ,(
B) ,and (
C)  
D) (
A) ,(
B) ,(
C) ,and (
D)

Question 10

The first transition series metals are shown below.  
-Which has the highest melting point?

Accepted Answer

A) Sc 
B) V 
C) Mn 
D) Zn 
A) Sc 
B) V 
C) Mn 
D) Zn

Question 11

Consider the following isomers of [Co(NHS1U1B13S1U1B0)S1U1B14S1U1B0BrS1U1B12S1U1B0]S1U1P1+S1S1P0.The black sphere represents Co,gray spheres represent NHS1U1B13S1U1B0,and unshaded spheres represent Br.  
-Which structures are identical?

Accepted Answer

A) None of the structures are identical. 
B) structure (1)= structure (2)and structure (3)= structure (4) 
C) structure (1)= structure (3)and structure (2)= structure (4) 
D) structure (1)= structure (4)and structure (2)= structure (3) 
A) None of the structures are identical. 
B) structure (1)= structure (2)and structure (3)= structure (4) 
C) structure (1)= structure (3)and structure (2)= structure (4) 
D) structure (1)= structure (4)and structure (2)= structure (3)

Question 12

The number of diastereoisomers possible for [Co(en)2Cl2]+ is ________.

Accepted Answer

Question 13

-Which of the above are bidentate ligands?

Accepted Answer

A) All are bidentate. 
B) (a)and (b) 
C) (c)and (d) 
D) None are bidentate. 
A) All are bidentate. 
B) (a)and (b) 
C) (c)and (d) 
D) None are bidentate.

Question 14

Which is a complex ion?

Accepted Answer

A) CrCl3 
B) CrO42- 
C) [Cr(H2O)6]3+ 
D) Cr2O72- 
A) CrCl3 
B) CrO42- 
C) [Cr(H2O)6]3+ 
D) Cr2O72-

Question 15

The third transition series metals are shown below.  
-Which has the highest melting point?

Accepted Answer

A) La 
B) W 
C) Os 
D) Hg 
A) La 
B) W 
C) Os 
D) Hg

Question 16

Identify the classification of isomers illustrated by [Co(NO2)(NH3)5]2+ and [Co(ONO)(NH3)5]2+.

Accepted Answer

A) linkage isomers 
B) ionization isomers 
C) geometric isomers 
D) optical isomers 
A) linkage isomers 
B) ionization isomers 
C) geometric isomers 
D) optical isomers

Question 17

How many unpaired electrons are present in the high spin form of the [CoF6]3- complex and what metal orbitals are used in bonding?

Accepted Answer

A) 0 unpaired electrons and 4s,4p and 4d orbitals to give sp3d2 
B) 4 unpaired electrons and 4s,4p and 4d orbitals to give sp3d2 
C) 0 unpaired electrons and 3d,4s,and 4p orbitals to give d2sp3 
D) 4 unpaired electrons and 3d,4s,and 4p orbitals to give d2sp3 
A) 0 unpaired electrons and 4s,4p and 4d orbitals to give sp3d2 
B) 4 unpaired electrons and 4s,4p and 4d orbitals to give sp3d2 
C) 0 unpaired electrons and 3d,4s,and 4p orbitals to give d2sp3 
D) 4 unpaired electrons and 3d,4s,and 4p orbitals to give d2sp3

Question 18

The second transition series metals are shown below.  
-Which has the largest atomic radius?

Accepted Answer

A) Y 
B) Mo 
C) Rh 
D) Cd 
A) Y 
B) Mo 
C) Rh 
D) Cd

Question 19

A chromium(III)ion forms a complex ion with two ammonia molecules and four thiocyanate ions.What is the formula of the complex ion?

Accepted Answer

A) [Cr(NH3)2(NCS)4]3+ 
B) [Cr(NH4)2(NCS)4]+ 
C) [Cr(NH3)2(NCS)4]- 
D) [Cr(NH3)2(NCS)4]4- 
A) [Cr(NH3)2(NCS)4]3+ 
B) [Cr(NH4)2(NCS)4]+ 
C) [Cr(NH3)2(NCS)4]- 
D) [Cr(NH3)2(NCS)4]4-

Question 20

Using the following reduction potentials for copper determine the unstable copper compound.
Cu+(aq)+ e- → Cu(s)E° = +0.52 V
Cu2+(aq)+ e- → Cu+(aq)E° = +0.15 V

Accepted Answer

A) CuCl 
B) CuCl2 
C) CuSO4 
D) Cu(OH)2 
A) CuCl 
B) CuCl2 
C) CuSO4 
D) Cu(OH)2

Exam 20: Transition Elements and Coordination Chemistry

What is the crystal field energy level diagram for the complex [Co(CN)6]3-?

-Which of the above are monodentate ligands?

-Which group of elements,indicated by letter and shading on the periodic table above,represents the transition elements?

Consider the following ethylenediamine complexes.The black sphere represents Co,gray connected spheres represent ethylenediamine,NH2CH2CH2NH2,and unshaded spheres represent Br. -Which complexes are chiral?

In which blocks of the periodic table are the transition series and inner transition series elements found?

Write the chemical formula for aquabromobis(ethylenediamine)chromium(III)chloride.

The third transition series metals are shown below. -Which has the largest atomic radius?

Which definition best describes isomers that are non-superimposable mirror images of each other that rotate plane polarized light to the same degree but in opposite directions?

-Which of the Co(III)complexes above are enantiomers of each other?

The first transition series metals are shown below. -Which has the highest melting point?

Consider the following isomers of [Co(NH3)4Br2]+.The black sphere represents Co,gray spheres represent NH3,and unshaded spheres represent Br. -Which structures are identical?

The number of diastereoisomers possible for [Co(en)2Cl2]+ is ________.

-Which of the above are bidentate ligands?

Which is a complex ion?

The third transition series metals are shown below. -Which has the highest melting point?

Identify the classification of isomers illustrated by [Co(NO2)(NH3)5]2+ and [Co(ONO)(NH3)5]2+.

How many unpaired electrons are present in the high spin form of the [CoF6]3- complex and what metal orbitals are used in bonding?

The second transition series metals are shown below. -Which has the largest atomic radius?

A chromium(III)ion forms a complex ion with two ammonia molecules and four thiocyanate ions.What is the formula of the complex ion?

Using the following reduction potentials for copper determine the unstable copper compound. Cu+(aq)+ e- → Cu(s)E° = +0.52 V Cu2+(aq)+ e- → Cu+(aq)E° = +0.15 V

Chemistry: Matter and Measurement

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Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

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Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Metals and Solid-State Materials

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Filters

What is the crystal field energy level diagram for the complex [Co(CN)₆]^3-?

Consider the following ethylenediamine complexes.The black sphere represents Co,gray connected spheres represent ethylenediamine,NH₂CH₂CH₂NH₂,and unshaded spheres represent Br. -Which complexes are chiral?

Consider the following isomers of [Co(NH₃)₄Br₂]⁺.The black sphere represents Co,gray spheres represent NH₃,and unshaded spheres represent Br. -Which structures are identical?

The number of diastereoisomers possible for [Co(en)₂Cl₂]⁺ is ________.

Identify the classification of isomers illustrated by [Co(NO₂)(NH₃)₅]²⁺ and [Co(ONO)(NH₃)₅]²⁺.

How many unpaired electrons are present in the high spin form of the [CoF₆]^3- complex and what metal orbitals are used in bonding?

Using the following reduction potentials for copper determine the unstable copper compound. Cu⁺(aq)+ e^- → Cu(s)E° = +0.52 V Cu²⁺(aq)+ e^- → Cu⁺(aq)E° = +0.15 V