Question 1

-Which is the crystal field energy level diagram for a square pyramidal ML5 complex that contains a single ligand on the z-axis?

Accepted Answer

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

Question 2

Ethylenediaminetetraacetate ion (EDTA4-)is commonly referred to as a ________ ligand.

Accepted Answer

A) monodentate 
B) tridentate 
C) pentadentate 
D) hexadentate 
A) monodentate 
B) tridentate 
C) pentadentate 
D) hexadentate

Question 3

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

Accepted Answer

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

Question 4

How many valence electrons does the element Co have?

Accepted Answer

A) 1 
B) 10 
C) 12 
D) 9 
A) 1 
B) 10 
C) 12 
D) 9

Question 5

-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 6

Which element is most likely to have an anomalous electron configuration?

Accepted Answer

A) Zr 
B) Mn 
C) Au 
D) Ca 
A) Zr 
B) Mn 
C) Au 
D) Ca

Question 7

Which of the following can function as a bidentate ligand?

Accepted Answer

A) NO + 
B) Cl - 
C) S CN - 
D) H2NCH2CO2 - 
A) NO + 
B) Cl - 
C) S CN - 
D) H2NCH2CO2 -

Question 8

The formula for tetraamminediiodochromium(III)bromide is ________.

Accepted Answer

The answer of The formula for tetraamminediiodochromium(III)bromide is ________....

Question 9

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 10

Which of the following elements has the highest density?

Accepted Answer

A) Cr 
B) Cu 
C) Os 
D) Re 
A) Cr 
B) Cu 
C) Os 
D) Re

Question 11

Though we would expect an increase in atomic radii going down a group from the second to the third transition series of elements,the actual radii are nearly identical.The term commonly used to describe this phenomenon is the

Accepted Answer

A) atomic disparity. 
B) effective nuclear charge. 
C) lanthanide contraction. 
D) transition default. 
A) atomic disparity. 
B) effective nuclear charge. 
C) lanthanide contraction. 
D) transition default.

Question 12

The complex [Ni(CN)4]2- is diamagnetic and the complex [NiCl4]2- is paramagnetic.What can you conclude about their molecular geometries?

Accepted Answer

A) Both complexes have square planar geometries. 
B) Both complexes have tetrahedral geometries. 
C) [NiCl4]2- has a square planar geometry while [Ni(CN)4]2- has a tetrahedral geometry. 
D) [NiCl4]2- has a tetrahedral geometry while [Ni(CN)4]2- has a square planar geometry. 
A) Both complexes have square planar geometries. 
B) Both complexes have tetrahedral geometries. 
C) [NiCl4]2- has a square planar geometry while [Ni(CN)4]2- has a tetrahedral geometry. 
D) [NiCl4]2- has a tetrahedral geometry while [Ni(CN)4]2- has a square planar geometry.

Question 13

The coordination number of cobalt in [Co(NH3)4Cl2]F is ________.

Accepted Answer

Question 14

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

Accepted Answer

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

Question 15

-Which is the most common ion formed by element B on the above periodic table?

Accepted Answer

A) B+ 
B) B2+ 
C) B3+ 
D) B4+ 
A) B+ 
B) B2+ 
C) B3+ 
D) B4+

Question 16

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 exist as enantiomers?

Accepted Answer

A) All exist as enantiomers. 
B) isomers (1)and (3) 
C) isomers (2)and (4) 
D) None exist as enantiomers. 
A) All exist as enantiomers. 
B) isomers (1)and (3) 
C) isomers (2)and (4) 
D) None exist as enantiomers.

Question 17

Which transition element has the highest melting point?

Accepted Answer

A) Sc 
B) V 
C) Cu 
D) W 
A) Sc 
B) V 
C) Cu 
D) W

Question 18

The first transition series metals are shown below.  
-Which has the smallest atomic radius?

Accepted Answer

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

Question 19

Which Pt(II)complexes are geometric isomers of each other?

Accepted Answer

A) (a)and (f) 
B) (b)and (e) 
C) (c)and (d) 
D) (a)and (b) 
A) (a)and (f) 
B) (b)and (e) 
C) (c)and (d) 
D) (a)and (b)

Question 20

The small sizes of third transition series atoms is referred to as the ________ contraction.

Accepted Answer

The answer of The small sizes of third transition series...

Exam 20: Transition Elements and Coordination Chemistry

-Which is the crystal field energy level diagram for a square pyramidal ML5 complex that contains a single ligand on the z-axis?

Ethylenediaminetetraacetate ion (EDTA4-)is commonly referred to as a ________ ligand.

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

How many valence electrons does the element Co have?

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

Which element is most likely to have an anomalous electron configuration?

Which of the following can function as a bidentate ligand?

The formula for tetraamminediiodochromium(III)bromide is ________.

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

Which of the following elements has the highest density?

Though we would expect an increase in atomic radii going down a group from the second to the third transition series of elements,the actual radii are nearly identical.The term commonly used to describe this phenomenon is the

The complex [Ni(CN)4]2- is diamagnetic and the complex [NiCl4]2- is paramagnetic.What can you conclude about their molecular geometries?

The coordination number of cobalt in [Co(NH3)4Cl2]F is ________.

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

-Which is the most common ion formed by element B on the above periodic table?

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

Which transition element has the highest melting point?

The first transition series metals are shown below. -Which has the smallest atomic radius?

Which Pt(II)complexes are geometric isomers of each other?

The small sizes of third transition series atoms is referred to as the ________ contraction.

Chemical Tools: Experimentation and Measurement

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Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories and Molecular Structure

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

Nuclear Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

-Which is the crystal field energy level diagram for a square pyramidal ML₅ complex that contains a single ligand on the z-axis?

Ethylenediaminetetraacetate ion (EDTA^4-)is commonly referred to as a ________ ligand.

The complex [Ni(CN)₄]^2- is diamagnetic and the complex [NiCl₄]^2- is paramagnetic.What can you conclude about their molecular geometries?

The coordination number of cobalt in [Co(NH₃)₄Cl₂]F is ________.

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