Question 1

Write the formula for diamminedichloroethylenediaminecobalt(III)  bromide.

Accepted Answer

A)   [CoCl2(en) (NH3) 2]Br
B)   [CoCl2(en) (NH3) 2]Br2
C)   [CoCl2(en) 2(NH3) 2]Br
D)   [CoCl2(en) 2(NH3) 2]Br2
E)   None of these choices is correct.F) B) and D)
G) A) and E)

Question 2

Which of the following ions could exist in either the high-spin or low-spin state in an octahedral complex?

Accepted Answer

A)   Sc3+
B)   Ni2+
C)   Mn2+
D)   Ti4+
E)   Zn2+F) A) and B)
G) C) and D)

Question 3

Give the systematic name for [CoCl3(H2O) ]¯.

Accepted Answer

A)   cobalt(II)  chloride monohydrate
B)   aquatrichlorocobalt(II) 
C)   aquatrichlorocobaltate(II) 
D)   aquatrichlorocobaltite(I) 
E)   None of these choices is correct.F) A) and C)
G) A) and B)

Question 4

Tetrahedral complexes can exhibit both optical and linkage isomerism.

Accepted Answer

A) True 
 B)False

Question 5

The most common oxidation state for ions of the inner transition elements is:

Accepted Answer

A)   +2
B)   +3
C)   +4
D)   +5
E)   +7F) C) and D)
G) B) and E)

Question 6

Which one of the following has the ground state electron configuration [Ar]3d104s1?

Accepted Answer

A)   In+
B)   Cd2+
C)   Ag+
D)   Ag
E)   CuF) B) and C)
G) A) and E)

Question 7

A certain transition element has the stable oxidation states of +2, +3, +4, +5, and +6. In which state will the element be most likely to form an ionic bond with chlorine?

Accepted Answer

A)   +2
B)   +3
C)   +4
D)   +5
E)   +6F) A) and B)
G) A) and C)

Question 8

Which of the following ligands is most likely to form a low-spin octahedral complex with iron(III) ?

Accepted Answer

A)   Cl¯
B)   H2O
C)   NH3
D)   OH¯
E)   COF) B) and E)
G) None of the above

Question 9

Apply the valence bond theory to predict the electronic structure and hybridization pattern of chromium in the complex ion Cr(NH3)63+.

Accepted Answer

The three d electrons of the Cr(III) wil...

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

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 ML32+. 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) A) and B)
G) A) and D)

Question 12

Give one important use of the following metals or their compounds.
A) chromium
B) manganese
C) mercury
D) silver

Accepted Answer

a. protective/decorative chromium platin...

Question 13

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 is correct.F) D) and E)
G) A) and D)

Question 14

Which of the following transition elements can have an oxidation number of +7?

Accepted Answer

A)   V
B)   Cr
C)   Mn
D)   Fe
E)   CoF) B) and C)
G) None of the above

Question 15

Consider the following structures (1 and 2 are octahedral; 3 and 4 are square planar) .  Which one of the following statements about the above structures is correct?

Accepted Answer

A)   1 and 2 are superimposable.
B)   1 and 2 are geometric isomers.
C)   3 and 4 are structural isomers.
D)   3 and 4 are optical isomers.
E)   3 and 4 are geometric isomers.F) B) and D)
G) C) and D)

Question 16

Which of the following is considered a bidentate ligand?

Accepted Answer

A)   cyanide, CN¯
B)   thiocyanate, SCN¯
C)   oxalate, C2O42¯
D)   nitrite, NO2¯
E)   hydroxide, OH¯F) B) and E)
G) A) and D)

Question 17

Aluminum reacts with oxygen in the air to form a protective oxide coating. Silver also reacts with compounds in air to form a black coating. What substance is formed?

Accepted Answer

A)   silver oxide
B)   silver chloride
C)   silver sulfide
D)   silver carbonate
E)   silver nitrideF) A) and C)
G) A) and B)

Question 18

Which of the following atoms has the biggest radius?

Accepted Answer

A)   Ti
B)   Cr
C)   Fe
D)   Ni
E)   ZnF) B) and E)
G) A) and B)

Question 19

In the presence of a strong octahedral ligand field, the number of unpaired electrons in Co(III)  will be

Accepted Answer

A)   0
B)   2
C)   4
D)   6
E)   None of these choices is correct.F) B) and C)
G) B) and E)

Question 20

Octahedral complexes can exhibit geometric, optical and linkage isomerism.

Accepted Answer

A) True 
 B)False

Exam 23: The Transition Elements and Their Coordination Compounds

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 ML32+. 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 has the ground state electron configuration [Ar]3d104s1?

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Consider the following structures (1 and 2 are octahedral; 3 and 4 are square planar) . Which one of the following statements about the above structures is correct?

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Aluminum reacts with oxygen in the air to form a protective oxide coating. Silver also reacts with compounds in air to form a black coating. What substance is formed?

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Which of the following ligands is most likely to form a low-spin octahedral complex with iron(III) ?

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Which of the following atoms has the biggest radius?

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Octahedral complexes can exhibit geometric, optical and linkage isomerism.

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Tetrahedral complexes can exhibit both optical and linkage isomerism.

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Which of the following transition elements can have an oxidation number of +7?

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Give the systematic name for [CoCl3(H2O) ]¯.

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

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The most common oxidation state for ions of the inner transition elements is:

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A certain transition element has the stable oxidation states of +2, +3, +4, +5, and +6. In which state will the element be most likely to form an ionic bond with chlorine?

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Which of the following ions could exist in either the high-spin or low-spin state in an octahedral complex?

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Apply the valence bond theory to predict the electronic structure and hybridization pattern of chromium in the complex ion Cr(NH3)63+.

Correct AnswerverifiedThe three d electrons of the Cr(III) wil...View AnswerShow Answer

Write the formula for diamminedichloroethylenediaminecobalt(III) bromide.

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Give one important use of the following metals or their compounds. A) chromium B) manganese C) mercury D) silver

Correct Answerverifieda. protective/decorative chromium platin...View AnswerShow Answer

Which of the following is considered a bidentate ligand?

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In the presence of a strong octahedral ligand field, the number of unpaired electrons in Co(III) will be

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

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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 ML₃²⁺. Approximately, what is the maximum concentration of ML₃²⁺, in mol/L, which could result from this reaction?

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Which one of the following has the ground state electron configuration [Ar]3d¹⁰4s¹?

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Give the systematic name for [CoCl₃(H₂O) ]¯.

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Apply the valence bond theory to predict the electronic structure and hybridization pattern of chromium in the complex ion Cr(NH₃)₆³⁺.

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The three d electrons of the Cr(III) wil...
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a. protective/decorative chromium platin...
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