Question 1

Based on the variation in Zeff,which M2+ ion should be the weakest reducing agent?

Accepted Answer

A) Ti 
B) Cr 
C) Fe 
D) Zn 
A) Ti 
B) Cr 
C) Fe 
D) Zn

Question 2

-Which element indicated on the above periodic table has the electron configuration [Ar] 3d3 4s2?

Accepted Answer

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

Question 3

Write the chemical formula for pentaamminenitritocobalt(III)ion.

Accepted Answer

A) [Co(NO)(NH3)5]3+ 
B) [Co(NO2)(NH3)5]2+ 
C) [Co(ONO)(NH3)5]2+ 
D) [Co(NH3)5(N2O)]2+ 
A) [Co(NO)(NH3)5]3+ 
B) [Co(NO2)(NH3)5]2+ 
C) [Co(ONO)(NH3)5]2+ 
D) [Co(NH3)5(N2O)]2+

Question 4

What is the name of the complex [Ni(en)3]3[Cr(CN)6]2?

Accepted Answer

A) ethylenediaminenickel(III)hexacyanochromate(II) 
B) tris(ethylenediamine)nickel(III)hexacyanochromate(II) 
C) tris(ethylenediamine)nickel(II)hexacyanochromate(III) 
D) bis(ethylenediamine)nickel(II)hexacyanochromate(III) 
A) ethylenediaminenickel(III)hexacyanochromate(II) 
B) tris(ethylenediamine)nickel(III)hexacyanochromate(II) 
C) tris(ethylenediamine)nickel(II)hexacyanochromate(III) 
D) bis(ethylenediamine)nickel(II)hexacyanochromate(III)

Question 5

What is the expected order for increasing octahedral (Δ0)crystal field splitting for the ligands I-,F-,H2O,NH3,en,CO?

Accepted Answer

A) I- - 2O 3 - - 3 2O 
C) I- - 2O 3 3 2O - - 
A) I- - 2O 3 - - 3 2O 
C) I- - 2O 3 3 2O - -

Question 6

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

Accepted Answer

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

Question 7

Which of the following transition elements (Cr,Co,Ni,and Cu)have positive oxidation potentials?

Accepted Answer

A) Cr 
B) Cu 
C) Cr,Cu,and Ni 
D) Cr,Co,and Ni 
A) Cr 
B) Cu 
C) Cr,Cu,and Ni 
D) Cr,Co,and Ni

Question 8

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 9

What is the coordination number of the Au atom in K [Au(CN)2(SCN)2]?

Accepted Answer

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

Question 10

What hybridization scheme is used for Ni in the square planar complex of [Ni(CN)4]2-?

Accepted Answer

A) sp3 
B) dsp2 
C) dsp3 
D) d2sp3 
A) sp3 
B) dsp2 
C) dsp3 
D) d2sp3

Question 11

Which of the following statements best explains why transition metals lose electrons from s orbitals before d orbitals?

Accepted Answer

A) Electrons from s orbitals are lower in energy than d orbitals. 
B) The d orbitals experience a greater drop in energy when electrons are removed. 
C) Electrons from d orbitals are less shielded from the nucleus than electrons in s orbitals. 
D) Electrons in s orbitals are paired. 
A) Electrons from s orbitals are lower in energy than d orbitals. 
B) The d orbitals experience a greater drop in energy when electrons are removed. 
C) Electrons from d orbitals are less shielded from the nucleus than electrons in s orbitals. 
D) Electrons in s orbitals are paired.

Question 12

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

Accepted Answer

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

Question 13

Which transition metal has the anomalous ground-state electron configuration: [Kr] 4d10?

Accepted Answer

A) Rh 
B) Pd 
C) Ag 
D) Cd 
A) Rh 
B) Pd 
C) Ag 
D) Cd

Question 14

What is the strongest oxidizing agent of the following set: VCl2,CrCl3,KMnO4,KReO4?

Accepted Answer

A) VCl2 
B) CrCl3 
C) KMnO4 
D) KReO4 
A) VCl2 
B) CrCl3 
C) KMnO4 
D) KReO4

Question 15

Which is the strongest oxidizing agent under acidic conditions?

Accepted Answer

A) Cr2+ 
B) Cr3+ 
C) CrO42- 
D) Cr2O72- 
A) Cr2+ 
B) Cr3+ 
C) CrO42- 
D) Cr2O72-

Question 16

What is the strongest oxidizing agent of the following set: MnCl2,Mn(OH)3,MnO2,KMnO4?

Accepted Answer

A) MnCl2 
B) Mn(OH)3 
C) MnO2 
D) KMnO4 
A) MnCl2 
B) Mn(OH)3 
C) MnO2 
D) KMnO4

Question 17

-Which of the Co(III)complexes above are optically active?

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 18

Which metal ion is most likely to form a square planar complex ion with CN-?

Accepted Answer

A) Co2+ 
B) Cu2+ 
C) Ni2+ 
D) Zn2+ 
A) Co2+ 
B) Cu2+ 
C) Ni2+ 
D) Zn2+

Question 19

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) mirror image isomers 
A) linkage isomers 
B) ionization isomers 
C) geometric isomers 
D) mirror image isomers

Question 20

-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

Exam 20: Transition Elements and Coordination Chemistry

Based on the variation in Zeff,which M2+ ion should be the weakest reducing agent?

-Which element indicated on the above periodic table has the electron configuration [Ar] 3d3 4s2?

Write the chemical formula for pentaamminenitritocobalt(III)ion.

What is the name of the complex [Ni(en)3]3[Cr(CN)6]2?

What is the expected order for increasing octahedral (Δ0)crystal field splitting for the ligands I-,F-,H2O,NH3,en,CO?

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

Which of the following transition elements (Cr,Co,Ni,and Cu)have positive oxidation potentials?

Which of the following can function as a chelating agent?

What is the coordination number of the Au atom in K [Au(CN)2(SCN)2]?

What hybridization scheme is used for Ni in the square planar complex of [Ni(CN)4]2-?

Which of the following statements best explains why transition metals lose electrons from s orbitals before d orbitals?

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

Which transition metal has the anomalous ground-state electron configuration: [Kr] 4d10?

What is the strongest oxidizing agent of the following set: VCl2,CrCl3,KMnO4,KReO4?

Which is the strongest oxidizing agent under acidic conditions?

What is the strongest oxidizing agent of the following set: MnCl2,Mn(OH)3,MnO2,KMnO4?

-Which of the Co(III)complexes above are optically active?

Which metal ion is most likely to form a square planar complex ion with CN-?

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

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

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Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

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Electrochemistry

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Filters

Based on the variation in Z_eff,which M²⁺ ion should be the weakest reducing agent?

-Which element indicated on the above periodic table has the electron configuration [Ar] 3d³ 4s²?

What is the name of the complex [Ni(en)₃]₃[Cr(CN)₆]₂?

What is the expected order for increasing octahedral (Δ₀)crystal field splitting for the ligands I^-,F^-,H₂O,NH₃,en,CO?

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

What is the coordination number of the Au atom in K [Au(CN)₂(SCN)₂]?

What hybridization scheme is used for Ni in the square planar complex of [Ni(CN)₄]^2-?

Which transition metal has the anomalous ground-state electron configuration: [Kr] 4d^10?

What is the strongest oxidizing agent of the following set: VCl₂,CrCl₃,KMnO₄,KReO₄?

What is the strongest oxidizing agent of the following set: MnCl₂,Mn(OH)₃,MnO₂,KMnO₄?

Which metal ion is most likely to form a square planar complex ion with CN^-?

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