Question 1

Write the formula for pentaamminechlorocobalt(III)  chloride.

Accepted Answer

A)   [Co(NH3) 5Cl]Cl
B)  [Co(NH3) 5Cl]Cl2
C)  [Co(NH3) 5Cl]Cl3
D)  [Co(NH3) 5Cl]Cl4
E)   None of these choices are correct.F) A) and B)
G) B) and C)

Question 2

In the compound K[Co(C2O4) 2(H2O) 2] (where C2O42- = oxalate)  the oxidation number and coordination number of cobalt are, respectively

Accepted Answer

A)   -1 and 4.
B)   -1 and 6.
C)   3 and 4.
D)   3 and 6.
E)   1 and 6.F) A) and E)
G) A) and D)

Question 3

Chromium and manganese are among the transition elements that form several different oxides. Which of the following statements characterize these oxides?

Accepted Answer

A)  As the oxidation number on the metal increases, the valence-state electronegativity increases and the oxides change from acidic to basic.
B)  As the oxidation number on the metal increases, the valence-state electronegativity increases and the oxides change from basic to acidic.
C)  As the oxidation number on the metal increases, the valence-state electronegativity decreases and the oxides change from acidic to basic.
D)  As the oxidation number on the metal increases, the valence-state electronegativity decreases and the oxides change from basic to acidic.
E)   None of these choices are correct.F) A) and B)
G) B) and E)

Question 4

In the compound [Ni(en) 2(H2O) 2]SO4 (where en = ethylenediamine)  the oxidation number and coordination number of nickel are, respectively

Accepted Answer

A)   2 and 6.
B)   4 and 6.
C)   6 and 6.
D)   2 and 4.
E)   4 and 4.F) A) and E)
G) A) and D)

Question 5

The Cu2+ ion has 1 unpaired electron.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following should be the strongest reducing agent?

Accepted Answer

A)   Fe
B)   Ru
C)   Os
D)   Re
E)   CuF) C) and E)
G) A) and C)

Question 7

The ground state electronic configuration of Cr2+ is

Accepted Answer

A)  [Ar]4s13d5.
B)  [Ar]4s23d4.
C)  [Ar]3d4.
D)  [Ar]4s13d3.
E)  [Ar]4s23d2.F) A) and B)
G) C) and D)

Question 8

The inner transition series of elements arise from the filling of f orbitals.

Accepted Answer

A) True 
 B)False

Question 9

If a solution absorbs green light, what is its likely color?

Accepted Answer

A)   red
B)   violet
C)   orange
D)   yellow
E)   blueF) B) and C)
G) C) and E)

Question 10

Of the 3d transition series of elements, scandium has the greatest atomic radius.

Accepted Answer

A) True 
 B)False

Question 11

Which one of the following normally acts as a bidentate ligand in complexes with transitionmetal ions?

Accepted Answer

A)   CN-
B)   EDTA4-
C)   SCN-
D)   ethylene diamine
E)   ethylene, C2H4F) C) and D)
G) A) and C)

Question 12

All the actinide series of transition elements are radioactive.

Accepted Answer

A) True 
 B)False

Question 13

Valence Bond theory rationalizes octahedral geometry by assuming a d2sp3 hybridization pattern.

Accepted Answer

A) True 
 B)False

Question 14

Tetrahedral complexes can exhibit both optical and linkage isomerism.

Accepted Answer

A) True 
 B)False

Question 15

10.0 mL of a 0.100 mol/L solution of a metal ion M2+ is mixed with 10.0 mL of a 0.100 mol/L solution of a ligand L. A reaction occurs in which the product is ML3. Approximately, what is the maximum concentration of ML32+, in mol/L, which could result from this reaction?

Accepted Answer

A)   0.100
B)   0.050
C)   0.033
D)   0.025
E)   0.017F) D) and E)
G) B) and D)

Question 16

Which of the following will be diamagnetic?

Accepted Answer

A)   Ni2+
B)   Cr2+
C)   Mn2+
D)   Co3+
E)   Ti4+F) D) and E)
G) A) and C)

Question 17

Which of the following statements about lanthanides and actinides is incorrect?

Accepted Answer

A)   The +3 oxidation state is the most common for both lanthanides and actinides.
B)   All of the actinide elements are radioactive.
C)   All of the lanthanide elements occur in nature.
D)   All of the actinide elements are artificially made.
E)   Due to similarities in their chemical properties, the actinide elements are not easily separated from each other.F) B) and C)
G) B) and D)

Question 18

Of the 3d transition series of elements, zinc has the greatest atomic radius.

Accepted Answer

A) True 
 B)False

Question 19

Iron(III)  forms an octahedral complex with the ligand CN-. How many unpaired electrons are in the d orbitals of iron?

Accepted Answer

A)   1
B)   3
C)   5
D)   7
E)   None of these choices are correct.F) D) and E)
G) B) and C)

Question 20

In complexes of transition metals, the maximum coordination number of the metal is equal to its number of d electrons.

Accepted Answer

A) True 
 B)False

Exam 23: Transition Elements and Their Coordination Compounds

In the compound [Ni(en) 2(H2O) 2]SO4 (where en = ethylenediamine) the oxidation number and coordination number of nickel are, respectively

Correct AnswerverifiedShow Answer

Which of the following will be diamagnetic?

Correct AnswerverifiedShow Answer

The Cu2+ ion has 1 unpaired electron.

Correct AnswerverifiedShow Answer

Which of the following statements about lanthanides and actinides is incorrect?

Correct AnswerverifiedShow Answer

All the actinide series of transition elements are radioactive.

Correct AnswerverifiedShow Answer

Tetrahedral complexes can exhibit both optical and linkage isomerism.

Correct AnswerverifiedShow Answer

Chromium and manganese are among the transition elements that form several different oxides. Which of the following statements characterize these oxides?

Correct AnswerverifiedShow Answer

Write the formula for pentaamminechlorocobalt(III) chloride.

Correct AnswerverifiedShow Answer

If a solution absorbs green light, what is its likely color?

Correct AnswerverifiedShow Answer

Of the 3d transition series of elements, scandium has the greatest atomic radius.

Correct AnswerverifiedShow Answer

10.0 mL of a 0.100 mol/L solution of a metal ion M2+ is mixed with 10.0 mL of a 0.100 mol/L solution of a ligand L. A reaction occurs in which the product is ML3. Approximately, what is the maximum concentration of ML32+, in mol/L, which could result from this reaction?

Correct AnswerverifiedShow Answer

Which one of the following normally acts as a bidentate ligand in complexes with transitionmetal ions?

Correct AnswerverifiedShow Answer

Of the 3d transition series of elements, zinc has the greatest atomic radius.

Correct AnswerverifiedShow Answer

In complexes of transition metals, the maximum coordination number of the metal is equal to its number of d electrons.

Correct AnswerverifiedShow Answer

The inner transition series of elements arise from the filling of f orbitals.

Correct AnswerverifiedShow Answer

The ground state electronic configuration of Cr2+ is

Correct AnswerverifiedShow Answer

Which of the following should be the strongest reducing agent?

Correct AnswerverifiedShow Answer

Valence Bond theory rationalizes octahedral geometry by assuming a d2sp3 hybridization pattern.

Correct AnswerverifiedShow Answer

Iron(III) forms an octahedral complex with the ligand CN-. How many unpaired electrons are in the d orbitals of iron?

Correct AnswerverifiedShow Answer

In the compound K[Co(C2O4) 2(H2O) 2] (where C2O42- = oxalate) the oxidation number and coordination number of cobalt are, respectively

Correct AnswerverifiedShow Answer

In the compound [Ni(en) ₂(H₂O) ₂]SO₄ (where en = ethylenediamine) the oxidation number and coordination number of nickel are, respectively

Correct Answer
verified

Correct Answer
verified

The Cu²⁺ ion has 1 unpaired electron.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

10.0 mL of a 0.100 mol/L solution of a metal ion M²⁺ is mixed with 10.0 mL of a 0.100 mol/L solution of a ligand L. A reaction occurs in which the product is ML₃. Approximately, what is the maximum concentration of ML₃²⁺, in mol/L, which could result from this reaction?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The ground state electronic configuration of Cr²⁺ is

Correct Answer
verified

Correct Answer
verified

Valence Bond theory rationalizes octahedral geometry by assuming a d²sp³ hybridization pattern.

Correct Answer
verified

Iron(III) forms an octahedral complex with the ligand CN^-. How many unpaired electrons are in the d orbitals of iron?

Correct Answer
verified

In the compound K[Co(C₂O₄) ₂(H₂O) ₂] (where C₂O₄^2- = oxalate) the oxidation number and coordination number of cobalt are, respectively

Correct Answer
verified