Question 1

How many valence electrons does the element Co have?

Accepted Answer

A) 2 
B) 7 
C) 8 
D) 9 
A) 2 
B) 7 
C) 8 
D) 9

Question 2

-Using the above schematic of an artist's color wheel,determine the color seen if a substance absorbs red and yellow light.

Accepted Answer

A) blue 
B) green 
C) orange 
D) violet 
A) blue 
B) green 
C) orange 
D) violet

Question 3

In order to form a neutral compound,hexafluoroaluminate would require

Accepted Answer

A) three K+ ions. 
B) three Cl- ions. 
C) six Na+ ions. 
D) six Br- ions. 
A) three K+ ions. 
B) three Cl- ions. 
C) six Na+ ions. 
D) six Br- ions.

Question 4

-Using the above schematic of an artist's color wheel,determine the color seen if a substance absorbs yellow and blue light.

Accepted Answer

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

Question 5

For an octahedral complex what metal d orbitals are directly towards the ligands?

Accepted Answer

A) dxy,dxz 
B) dxy,dxz,dyz 
C) dz²,dx²-y² 
D) dz²,dxz,dyz 
A) dxy,dxz 
B) dxy,dxz,dyz 
C) dz²,dx²-y² 
D) dz²,dxz,dyz

Question 6

Transition series elements are all

Accepted Answer

A) gases. 
B) metals. 
C) nonmetals. 
D) semimetals. 
A) gases. 
B) metals. 
C) nonmetals. 
D) semimetals.

Question 7

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 8

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 9

Which of the following can function as a chelating agent?

Accepted Answer

A) CN- 
B) CO 
C) H2NCH2CH2NH2 
D) NCS- 
A) CN- 
B) CO 
C) H2NCH2CH2NH2 
D) NCS-

Question 10

The third transition series metals are shown below.  
-Which has the greatest density?

Accepted Answer

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

Question 11

What is the ground-state electron configuration for the element chromium (Z = 24)?

Accepted Answer

A) [Ne] 4s2 3d4 
B) [Ar] 4s2 3d4 
C) [Ar] 4s1 3d5 
D) [Ar] 3d6 
A) [Ne] 4s2 3d4 
B) [Ar] 4s2 3d4 
C) [Ar] 4s1 3d5 
D) [Ar] 3d6

Question 12

Which ion has cis and trans isomers?

Accepted Answer

A) [PdCl3NH3]- 
B) [Pt(CN)5NH3]- 
C) [PtCl2(CN)2]2- 
D) [Pt(C2O4)2]2- 
A) [PdCl3NH3]- 
B) [Pt(CN)5NH3]- 
C) [PtCl2(CN)2]2- 
D) [Pt(C2O4)2]2-

Question 13

The absorbance spectrum of a complex along with an artist's color wheel is shown below.Determine the color one might see for this complex.

Accepted Answer

A) green 
B) red 
C) red-violet 
D) yellow 
A) green 
B) red 
C) red-violet 
D) yellow

Question 14

What is the strongest oxidizing agent of the following set: FeO,Fe2O3,Fe3O4,FeO42-?

Accepted Answer

A) FeO 
B) Fe2O3 
C) Fe3O4 
D) FeO42- 
A) FeO 
B) Fe2O3 
C) Fe3O4 
D) FeO42-

Question 15

Which of the following species is diamagnetic?

Accepted Answer

A) an isolated,gas-phase Cr3+ ion 
B) a high-spin octahedral Cr2+ complex 
C) an isolated,gas-phase Cu2+ ion 
D) a low-spin octahedral Co3+ complex 
A) an isolated,gas-phase Cr3+ ion 
B) a high-spin octahedral Cr2+ complex 
C) an isolated,gas-phase Cu2+ ion 
D) a low-spin octahedral Co3+ complex

Question 16

Which ion would you expect to have the largest crystal field splitting Δ?

Accepted Answer

A) [ Rh(CN)6]4- 
B) [ Rh(CN)6]3- 
C) [ Rh(H2O)6]2+ 
D) [ Rh(H2O)6]3+ 
A) [ Rh(CN)6]4- 
B) [ Rh(CN)6]3- 
C) [ Rh(H2O)6]2+ 
D) [ Rh(H2O)6]3+

Question 17

What is the ground-state electron configuration for Cr3+ (Z = 2 4)?

Accepted Answer

A) [Ar] 4s2 3d7 
B) [Ar] 4s2 3d1 
C) [Ar] 3d3 
D) [Ar] 4s1 3d2 
A) [Ar] 4s2 3d7 
B) [Ar] 4s2 3d1 
C) [Ar] 3d3 
D) [Ar] 4s1 3d2

Question 18

What is the ground-state electron configuration for the element chromium (Z = 24)?

Accepted Answer

A) [Ne] 4s2 3d4 
B) [Ar] 4s2 3d4 
C) [Ar] 4s1 3d5 
D) [Ar] 3d6 
A) [Ne] 4s2 3d4 
B) [Ar] 4s2 3d4 
C) [Ar] 4s1 3d5 
D) [Ar] 3d6

Question 19

The complex cis-[CoCl(NH3)(NH2CH2CH2NH2)2]2+ was resolved into optical isomers in 1911 by Alfred Werner,demonstrating the octahedral geometry of the ion.Name this complex ion.

Accepted Answer

A) cis-chloroammineethylenediaminecobalt(II)ion 
B) cis-amminechloroethylenediaminecobalt(III)ion 
C) cis-amminechlorobis(ethylenediamine)cobalt(II)ion 
D) cis-amminechlorobis(ethylenediamine)cobalt(III)ion 
A) cis-chloroammineethylenediaminecobalt(II)ion 
B) cis-amminechloroethylenediaminecobalt(III)ion 
C) cis-amminechlorobis(ethylenediamine)cobalt(II)ion 
D) cis-amminechlorobis(ethylenediamine)cobalt(III)ion

Question 20

Which of the following is a disproportionation reaction?

Accepted Answer

A) Cu2S(l)+ O2(g)→ 2 Cu(l)+ SO2(g) 
B) 3 Cu(s)+ 2 NO3-(aq)+ 8 H+(aq)→ 3 Cu2+(aq)+ 2 NO(g)+ 4 H2O(l) 
C) 2 Cu+(aq)→ Cu(s)+ Cu2+(aq) 
D) Cu2+(aq)+ 4 NH3(aq)→ Cu(NH3)42+(aq) 
A) Cu2S(l)+ O2(g)→ 2 Cu(l)+ SO2(g) 
B) 3 Cu(s)+ 2 NO3-(aq)+ 8 H+(aq)→ 3 Cu2+(aq)+ 2 NO(g)+ 4 H2O(l) 
C) 2 Cu+(aq)→ Cu(s)+ Cu2+(aq) 
D) Cu2+(aq)+ 4 NH3(aq)→ Cu(NH3)42+(aq)

Exam 20: Transition Elements and Coordination Chemistry

How many valence electrons does the element Co have?

-Using the above schematic of an artist's color wheel,determine the color seen if a substance absorbs red and yellow light.

In order to form a neutral compound,hexafluoroaluminate would require

-Using the above schematic of an artist's color wheel,determine the color seen if a substance absorbs yellow and blue light.

For an octahedral complex what metal d orbitals are directly towards the ligands?

Transition series elements are all

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?

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

Which of the following can function as a chelating agent?

The third transition series metals are shown below. -Which has the greatest density?

What is the ground-state electron configuration for the element chromium (Z = 24)?

Which ion has cis and trans isomers?

The absorbance spectrum of a complex along with an artist's color wheel is shown below.Determine the color one might see for this complex.

What is the strongest oxidizing agent of the following set: FeO,Fe2O3,Fe3O4,FeO42-?

Which of the following species is diamagnetic?

Which ion would you expect to have the largest crystal field splitting Δ?

What is the ground-state electron configuration for Cr3+ (Z = 2 4)?

What is the ground-state electron configuration for the element chromium (Z = 24)?

The complex cis-[CoCl(NH3)(NH2CH2CH2NH2)2]2+ was resolved into optical isomers in 1911 by Alfred Werner,demonstrating the octahedral geometry of the ion.Name this complex ion.

Which of the following is a disproportionation reaction?

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds 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

Hydrogen, oxygen, and Water

The Main-Group Elements

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

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?

What is the strongest oxidizing agent of the following set: FeO,Fe₂O₃,Fe₃O₄,FeO₄^2-?

What is the ground-state electron configuration for Cr³⁺ (Z = 2 4)?

The complex cis-[CoCl(NH₃)(NH₂CH₂CH₂NH₂)₂]²⁺ was resolved into optical isomers in 1911 by Alfred Werner,demonstrating the octahedral geometry of the ion.Name this complex ion.