Question 1

The hexxaaquo complex, [Co(OH2) 6]2+ ,Should have how many unpaired electrons?

Accepted Answer

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

Question 2

In the complex [Fe(CN) 6]4-,

Accepted Answer

A)   iron is a Lewis acid and cyanide is a Lewis base.
B)   Cyanide is a Lewis acid.
C)   iron has an oxidation number of +3.
D)   Cyanide has an oxidation number of -2.E) B) and C)
F) All of the above

Question 3

For the oxides CrO, Cr2O3, And CrO3,
Which of the following is true?

Accepted Answer

A)   All the oxides are basic.
B)   All the oxides are acidic.
C)   CrO is acidic, and Cr2O3 and CrO3 are basic.
D)   CrO and Cr2O3 are acidic and CrO3 is basic.
E)   CrO is basic, Cr2O3 is amphoteric, and CrO3 is acidic.F) A) and B)
G) A) and C)

Question 4

Which of the following pairs have about the same atomic radius?

Accepted Answer

A)   Cu and Ag
B)   Co and Rh
C)   Fe and Ru
D)   Mn and Tc
E)   Ru and OsF) A) and E)
G) All of the above

Question 5

The complex [Ru(OH2) 3Cl3]

Accepted Answer

A)   is chiral.
B)   has 2 geometric isomers, neither of which is chiral.
C)   has 2 geometric isomers, one of which is chiral.
D)   has 2 geometric isomers, both of which are chiral.
E)   has no geometric isomers.F) B) and C)
G) A) and B)

Question 6

How many unpaired electrons can be predicted for an iron(II)  complex when the complex is tetrahedral?

Accepted Answer

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

Question 7

Which of the following is likely to be a good oxidizing agent?

Accepted Answer

A)   Fe2+ 
B)   Cr2+ 
C)   V2+ 
D)   Mn2+ 
E)   MnO4- F) A) and D)
G) B) and D)

Question 8

How many unpaired electrons are predicted for a tetrahedral iron (II)  complex?

Accepted Answer

A)   5 or 1, depending on the ligands.
B)   0 or 4, depending on the ligands.
C)   1
D)   4
E)   5F) C) and E)
G) B) and D)

Question 9

How many unpaired electrons are expected for Co(OH2) 62+?

Accepted Answer

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

Question 10

The ligand field splitting energy is greater for complexes of $ \pi $-acid ligands than for complexes of $ \pi $-base ligands.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following oxides is likely to be acidic?

Accepted Answer

A)   Mn2O7 
B)   MnO2 
C)   Mn2O7 and MnO
D)   Mn2O3 
E)   MnOF) B) and E)
G) C) and E)

Question 12

Comparing [Co(CN) 6]3- with [CoCl6]4-, which of the following statements is true?

Accepted Answer

A)   [Co(CN) 6]3-has more d-electrons than [CoCl6]4-.
B)   [Co(CN) 6]3- is paramagnetic while [CoCl6]4- is diamagnetic.
C)   Both complexes are paramagnetic.
D)   [Co(CN) 6]3- is diamagnetic while [CoCl6]4- is paramagnetic.
E)   [Co(CN) 6]3- has the same number of d-electrons as [CoCl6]4-.F) B) and E)
G) B) and D)

Question 13

Rhodium lies below cobalt in the periodic table .What is the d-electron configuration of [Rh(CN) 6]3-?

Accepted Answer

A)   t2g5eg2 
B)   t2g4eg1 
C)   t2g6 
D)   t2g4eg2 
E)   t2g5 F) All of the above
G) D) and E)

Question 14

One mole of cis-tetraamminedichlororhodium(III)  chloride dissolves in water to give

Accepted Answer

A)   3 moles of ions.
B)   2 moles of ions.
C)   1 mole of ions.
D)   6 moles of ions.E) A) and B)
F) A) and C)

Question 15

The lanthanide contraction results because

Accepted Answer

A)   the shielding effect of the d-electrons is less than that of the f-electrons.
B)   the shielding effect of the d-electrons is greater than that of the f-electrons.
C)   of the poor shielding effect of the f-electrons and the higher nuclear charge.
D)   the d-electrons shield the f-electrons from the nucleus.
E)   f-electrons interact more strongly with each other than d-electrons.F) A) and D)
G) B) and E)

Exam 9: The D-Block Elements

Which of the following is likely to be a good oxidizing agent?

Correct Answer
verified

Which of the following pairs have about the same atomic radius?

Correct Answer
verified

Comparing [Co(CN) ₆]³^- with [CoCl₆]⁴^-, which of the following statements is true?

Correct Answer
verified

Rhodium lies below cobalt in the periodic table .What is the d-electron configuration of [Rh(CN) ₆]³^-?

Correct Answer
verified

How many unpaired electrons are predicted for a tetrahedral iron (II) complex?

Correct Answer
verified

How many unpaired electrons can be predicted for an iron(II) complex when the complex is tetrahedral?

Correct Answer
verified

One mole of cis-tetraamminedichlororhodium(III) chloride dissolves in water to give

Correct Answer
verified

The complex [Ru(OH₂) ₃Cl₃]

Correct Answer
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The hexxaaquo complex, [Co(OH₂) ₆]²⁺ ,Should have how many unpaired electrons?

Correct Answer
verified

How many unpaired electrons are expected for Co(OH₂) ₆²⁺?

Correct Answer
verified

The lanthanide contraction results because

Correct Answer
verified

In the complex [Fe(CN) ₆]⁴^-,

Correct Answer
verified

For the oxides CrO, Cr₂O₃, And CrO₃, Which of the following is true?

Correct Answer
verified

The ligand field splitting energy is greater for complexes of $\pi$ -acid ligands than for complexes of $\pi$ -base ligands.

Correct Answer
verified

Which of the following oxides is likely to be acidic?

Correct Answer
verified

Exam 9: The D-Block Elements

Which of the following is likely to be a good oxidizing agent?

Correct AnswerverifiedShow Answer

Which of the following pairs have about the same atomic radius?

Correct AnswerverifiedShow Answer

Comparing [Co(CN) 6]3- with [CoCl6]4-, which of the following statements is true?

Correct AnswerverifiedShow Answer

Rhodium lies below cobalt in the periodic table .What is the d-electron configuration of [Rh(CN) 6]3-?

Correct AnswerverifiedShow Answer

How many unpaired electrons are predicted for a tetrahedral iron (II) complex?

Correct AnswerverifiedShow Answer

How many unpaired electrons can be predicted for an iron(II) complex when the complex is tetrahedral?

Correct AnswerverifiedShow Answer

One mole of cis-tetraamminedichlororhodium(III) chloride dissolves in water to give

Correct AnswerverifiedShow Answer

The complex [Ru(OH2) 3Cl3]

Correct AnswerverifiedShow Answer

The hexxaaquo complex, [Co(OH2) 6]2+ ,Should have how many unpaired electrons?

Correct AnswerverifiedShow Answer

How many unpaired electrons are expected for Co(OH2) 62+?

Correct AnswerverifiedShow Answer

The lanthanide contraction results because

Correct AnswerverifiedShow Answer

In the complex [Fe(CN) 6]4-,

Correct AnswerverifiedShow Answer

For the oxides CrO, Cr2O3, And CrO3, Which of the following is true?

Correct AnswerverifiedShow Answer

The ligand field splitting energy is greater for complexes of π \pi π -acid ligands than for complexes of π \pi π -base ligands.

Correct AnswerverifiedShow Answer

Which of the following oxides is likely to be acidic?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Comparing [Co(CN) ₆]³^- with [CoCl₆]⁴^-, which of the following statements is true?

Correct Answer
verified

Rhodium lies below cobalt in the periodic table .What is the d-electron configuration of [Rh(CN) ₆]³^-?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The complex [Ru(OH₂) ₃Cl₃]

Correct Answer
verified

The hexxaaquo complex, [Co(OH₂) ₆]²⁺ ,Should have how many unpaired electrons?

Correct Answer
verified

How many unpaired electrons are expected for Co(OH₂) ₆²⁺?

Correct Answer
verified

Correct Answer
verified

In the complex [Fe(CN) ₆]⁴^-,

Correct Answer
verified

For the oxides CrO, Cr₂O₃, And CrO₃, Which of the following is true?

Correct Answer
verified

The ligand field splitting energy is greater for complexes of $\pi$ -acid ligands than for complexes of $\pi$ -base ligands.

Correct Answer
verified

Correct Answer
verified