Question 1

How many unpaired electrons are found in each of the following complex ions?
-CoBr4- (tetrahedral)

Accepted Answer

Question 2

An element that is a significant component of both brass and bronze is:

Accepted Answer

A)  nickel
B)  tin
C)  copper
D)  iron
E)  zincF) A) and B)
G) B) and C)

Question 3

Which of the following transition metals is most likely to form an oxide?

Accepted Answer

A)  gold
B)  silver
C)  platinum
D)  palladium
E)  copperF) None of the above
G) A) and B)

Question 4

Because they have the same atoms,bonds,and formulas,geometrical isomers have the same color.

Accepted Answer

A) True 
 B)False

Question 5

Carboxyhemoglobin is formed when __________ prevents the normal uptake of oxygen in the blood.

Accepted Answer

A)  CN-
B)  CO
C)  CO2
D)  NH3
E)  CH4F) A) and B)
G) B) and E)

Question 6

How many unpaired electrons are found in each of the following complex ions?
-NiCl42-

Accepted Answer

Question 7

How many unpaired electrons are found in each of the following complex ions?
-[Zn(CN)6]4-

Accepted Answer

Question 8

Suppose you are studying coordination compounds of Co(II) with the ligand pyridine (py,C5H5N,molar mass = 79.10) .You isolate a crystalline compound,and since the only available anions are Cl- and NO3-,you hypothesize the empirical formula of the coordination compound must be Cow(py) x(Cl) y(NO3) z.
-You analyze for pyridine (Kb is approximately 10-9) by dissolving 0.1000 g of complex in 10 mL of H2O and titrating with a 0.01 M HCl solution.Which of the following indicators should be used to detect the endpoint? (Assume that the initial concentration of pyridine is approximately 0.01 M. )

Accepted Answer

A)  bromophenol blue,pH range of color change = 3.0-4.6
B)  methyl red,pH range of color change = 4.8-6.0
C)  bromothymol blue,pH range of color change = 6.0-7.6
D)  thymol blue,pH range of color change = 8.0 -9.6
E)  alizarin yellow,pH range of color change = 10.1-12.0F) A) and E)
G) B) and D)

Question 9

Analysis of the data from a titration indicates that a 0.1190-g sample of the complex contains 0.0844 g of py.Further analysis shows that 0.1190 g of the complex contains a 0.0157 g of cobalt and 0.0189 g of chloride.What is the empirical formula of the complex?

Accepted Answer

A)  Co(py) 6(Cl) (NO3) 
B)  Co(py) 4Cl2
C)  Co2(py) 5(Cl) 2(NO3) 2
D)  Co3(py) 8(Cl) 2(NO3) 4
E)  Co(py) 4(NO3) 2F) A) and B)
G) B) and D)

Question 10

A complex ion is a square planar complex.It has a d8 electron configuration.What is the most reasonable d orbital scheme for this complex?

Accepted Answer

A)   8 electron configuration.What is the most reasonable d orbital scheme for this complex? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
B)   8 electron configuration.What is the most reasonable d orbital scheme for this complex? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
C)   8 electron configuration.What is the most reasonable d orbital scheme for this complex? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
D)   8 electron configuration.What is the most reasonable d orbital scheme for this complex? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
E)   8 electron configuration.What is the most reasonable d orbital scheme for this complex? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >F) A) and E)
G) A) and B)

Question 11

According to crystal field theory,how many unpaired electrons are present in the complex ion [Fe(H2O) 6]2+? The water molecules are weak field ligands.

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) A) and C)
G) B) and E)

Question 12

This transition metal is used in the production of a hard steel used for rock crushers and bank vaults,and can be found in nodules on the ocean floor.

Accepted Answer

A)  iron
B)  manganese
C)  magnesium
D)  cobalt
E)  nickelF) C) and D)
G) All of the above

Question 13

Which metal ion has a d5 electron configuration?

Accepted Answer

A)  Cr2+
B)  Ag+
C)  Mn2+
D)  Os2+
E)  Co2+F) A) and D)
G) B) and E)

Question 14

The complex ion Co(NH3) 62+ (three unpaired electrons) is classified as:

Accepted Answer

A)  weak field
B)  strong field
C)  no way to tellD) A) and B)
E) A) and C)

Question 15

Here are some crystal field representations of d electrons in an octahedral complex:
I)  3) 5Cl]SO4 A) representation I B) representation II C) representation III D) representation IV E) representation V" class="answers-bank-image d-inline" rel="preload" > II)  3) 5Cl]SO4 A) representation I B) representation II C) representation III D) representation IV E) representation V" class="answers-bank-image d-inline" rel="preload" > III)  3) 5Cl]SO4 A) representation I B) representation II C) representation III D) representation IV E) representation V" class="answers-bank-image d-inline" rel="preload" > IV)  3) 5Cl]SO4 A) representation I B) representation II C) representation III D) representation IV E) representation V" class="answers-bank-image d-inline" rel="preload" > V)  3) 5Cl]SO4 A) representation I B) representation II C) representation III D) representation IV E) representation V" class="answers-bank-image d-inline" rel="preload" > Choose the representation that fits the transition metal atom in the following species:
-[Cr(NH3) 5Cl]SO4

Accepted Answer

A)  representation I
B)  representation II
C)  representation III
D)  representation IV
E)  representation VF) I) and A)
G) I) and D)

Question 16

Which complex ion shape is not capable of showing cis-trans isomerism?

Accepted Answer

A)  octahedral
B)  square planar
C)  tetrahedral
D)  two of these
E)  none of theseF) All of the above
G) A) and B)

Question 17

The expected electron configuration of Cu+ is [Ar] 3s13d9.

Accepted Answer

A) True 
 B)False

Question 18

Which 3d transition metal is mixed with concentrated sulfuric acid to give a powerful cleaning solution for removing organic materials from analytical glassware?

Accepted Answer

A)  chromium
B)  iron
C)  cobalt
D)  scandium
E)  manganeseF) A) and B)
G) D) and E)

Question 19

The iron in hemoglobin is ______ when carrying oxygen to cells,and _______ after releasing the oxygen.

Accepted Answer

A)  diamagnetic Fe2+,paramagnetic Fe3+
B)  diamagnetic Fe2+,paramagnetic Fe2+
C)  paramagnetic Fe2+,diamagnetic Fe3+
D)  paramagnetic Fe3+,diamagnetic Fe3+
E)  none of theseF) C) and D)
G) A) and B)

Question 20

What is the sum of all isomers (geometrical and optical) that the complex ion Co(en) 2Cl2+ exhibits?

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  4F) B) and E)
G) B) and D)

Exam 21: Transition Metals and Coordination Chemistry

How many unpaired electrons are found in each of the following complex ions? -[Zn(CN)₆]⁴^-

Correct Answer
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Which 3d transition metal is mixed with concentrated sulfuric acid to give a powerful cleaning solution for removing organic materials from analytical glassware?

Correct Answer
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Here are some crystal field representations of d electrons in an octahedral complex: I) II) III) IV) V) Choose the representation that fits the transition metal atom in the following species: -[Cr(NH₃) ₅Cl]SO₄

Correct Answer
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According to crystal field theory,how many unpaired electrons are present in the complex ion [Fe(H₂O) ₆]²⁺? The water molecules are weak field ligands.

Correct Answer
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Which metal ion has a d⁵ electron configuration?

Correct Answer
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The iron in hemoglobin is when carrying oxygen to cells,and _ after releasing the oxygen.

Correct Answer
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The complex ion Co(NH₃) ₆²⁺ (three unpaired electrons) is classified as:

Correct Answer
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How many unpaired electrons are found in each of the following complex ions? -CoBr₄^- (tetrahedral)

Correct Answer
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Which complex ion shape is not capable of showing cis-trans isomerism?

Correct Answer
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Carboxyhemoglobin is formed when __________ prevents the normal uptake of oxygen in the blood.

Correct Answer
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A complex ion is a square planar complex.It has a d⁸ electron configuration.What is the most reasonable d orbital scheme for this complex?

Correct Answer
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How many unpaired electrons are found in each of the following complex ions? -NiCl₄²^-

Correct Answer
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The expected electron configuration of Cu⁺ is [Ar] 3s¹3d⁹.

Correct Answer
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Analysis of the data from a titration indicates that a 0.1190-g sample of the complex contains 0.0844 g of py.Further analysis shows that 0.1190 g of the complex contains a 0.0157 g of cobalt and 0.0189 g of chloride.What is the empirical formula of the complex?

Correct Answer
verified

This transition metal is used in the production of a hard steel used for rock crushers and bank vaults,and can be found in nodules on the ocean floor.

Correct Answer
verified

Correct Answer
verified

Because they have the same atoms,bonds,and formulas,geometrical isomers have the same color.

Correct Answer
verified

An element that is a significant component of both brass and bronze is:

Correct Answer
verified

Which of the following transition metals is most likely to form an oxide?

Correct Answer
verified

What is the sum of all isomers (geometrical and optical) that the complex ion Co(en) ₂Cl₂⁺ exhibits?

Correct Answer
verified

Exam 21: Transition Metals and Coordination Chemistry

How many unpaired electrons are found in each of the following complex ions? -[Zn(CN)6]4-

Correct AnswerverifiedShow Answer

Which 3d transition metal is mixed with concentrated sulfuric acid to give a powerful cleaning solution for removing organic materials from analytical glassware?

Correct AnswerverifiedShow Answer

Here are some crystal field representations of d electrons in an octahedral complex: I) II) III) IV) V) Choose the representation that fits the transition metal atom in the following species: -[Cr(NH3) 5Cl]SO4

Correct AnswerverifiedShow Answer

According to crystal field theory,how many unpaired electrons are present in the complex ion [Fe(H2O) 6]2+? The water molecules are weak field ligands.

Correct AnswerverifiedShow Answer

Which metal ion has a d5 electron configuration?

Correct AnswerverifiedShow Answer

The iron in hemoglobin is ______ when carrying oxygen to cells,and _______ after releasing the oxygen.

Correct AnswerverifiedShow Answer

The complex ion Co(NH3) 62+ (three unpaired electrons) is classified as:

Correct AnswerverifiedShow Answer

How many unpaired electrons are found in each of the following complex ions? -CoBr4- (tetrahedral)

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Which complex ion shape is not capable of showing cis-trans isomerism?

Correct AnswerverifiedShow Answer

Carboxyhemoglobin is formed when __________ prevents the normal uptake of oxygen in the blood.

Correct AnswerverifiedShow Answer

A complex ion is a square planar complex.It has a d8 electron configuration.What is the most reasonable d orbital scheme for this complex?

Correct AnswerverifiedShow Answer

How many unpaired electrons are found in each of the following complex ions? -NiCl42-

Correct AnswerverifiedShow Answer

The expected electron configuration of Cu+ is [Ar] 3s13d9.

Correct AnswerverifiedShow Answer

Analysis of the data from a titration indicates that a 0.1190-g sample of the complex contains 0.0844 g of py.Further analysis shows that 0.1190 g of the complex contains a 0.0157 g of cobalt and 0.0189 g of chloride.What is the empirical formula of the complex?

Correct AnswerverifiedShow Answer

This transition metal is used in the production of a hard steel used for rock crushers and bank vaults,and can be found in nodules on the ocean floor.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Because they have the same atoms,bonds,and formulas,geometrical isomers have the same color.

Correct AnswerverifiedShow Answer

An element that is a significant component of both brass and bronze is:

Correct AnswerverifiedShow Answer

Which of the following transition metals is most likely to form an oxide?

Correct AnswerverifiedShow Answer

What is the sum of all isomers (geometrical and optical) that the complex ion Co(en) 2Cl2+ exhibits?

Correct AnswerverifiedShow Answer

How many unpaired electrons are found in each of the following complex ions? -[Zn(CN)₆]⁴^-

Correct Answer
verified

Correct Answer
verified

Here are some crystal field representations of d electrons in an octahedral complex: I) II) III) IV) V) Choose the representation that fits the transition metal atom in the following species: -[Cr(NH₃) ₅Cl]SO₄

Correct Answer
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According to crystal field theory,how many unpaired electrons are present in the complex ion [Fe(H₂O) ₆]²⁺? The water molecules are weak field ligands.

Correct Answer
verified

Which metal ion has a d⁵ electron configuration?

Correct Answer
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The iron in hemoglobin is when carrying oxygen to cells,and _ after releasing the oxygen.

Correct Answer
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The complex ion Co(NH₃) ₆²⁺ (three unpaired electrons) is classified as:

Correct Answer
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How many unpaired electrons are found in each of the following complex ions? -CoBr₄^- (tetrahedral)

Correct Answer
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Correct Answer
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Correct Answer
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A complex ion is a square planar complex.It has a d⁸ electron configuration.What is the most reasonable d orbital scheme for this complex?

Correct Answer
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How many unpaired electrons are found in each of the following complex ions? -NiCl₄²^-

Correct Answer
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The expected electron configuration of Cu⁺ is [Ar] 3s¹3d⁹.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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What is the sum of all isomers (geometrical and optical) that the complex ion Co(en) ₂Cl₂⁺ exhibits?

Correct Answer
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