Question 1

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

Question 2

The ground state electron configuration of a transition element atom cannot have more than one incomplete subshell.

Accepted Answer

A) True 
 B)False

Question 3

Mercury(II)  compounds are assimilated into the food chain because

Accepted Answer

A)   they are ionic substances that are concentrated in cell tissue.
B)   they complex with compounds in the blood which carries them to the muscle tissue of organisms.
C)   they are incorporated into bone structure.
D)   they are very soluble in water and easily ingested.
E)   they are nonpolar substances that are concentrated in fatty tissues as they move up the food chain.F) D) and E)
G) A) and E)

Question 4

a. How can the formation of a complex ion be described in terms of a theory of acids and bases?
b. What is the essential requirement for a molecule or ion to act as a ligand?

Accepted Answer

a. According to Lewis, in an acid-base r...

Question 5

Which of the following coordination numbers applies to octahedral complexes?

Accepted Answer

A)   4
B)   5
C)   6
D)   8
E)   none of the aboveF) A) and E)
G) C) and D)

Question 6

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 B)
G) C) and D)

Question 7

What is the difference between a coordination compound and a complex ion?

Accepted Answer

A coordination compound genera...

Question 8

Which of the following transition elements can achieve the largest oxidation number?

Accepted Answer

A)   chromium, Cr, Group 6B(6) 
B)   manganese, Mn, Group 7B(7) 
C)   iron, Fe, Group 8B(8) 
D)   cobalt, Co, Group 8B(9) 
E)   zinc, Zn, Group 2B(12) F) A) and B)
G) A) and C)

Question 9

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 the aboveF) A) and C)
G) D) and E)

Question 10

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 C)
G) A) and B)

Question 11

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 the aboveF) A) and B)
G) A) and E)

Question 12

The maximum oxidation state of an element in the first transition series never exceeds its group number.

Accepted Answer

A) True 
 B)False

Exam 23: The Transition Elements and Their Coordination Compounds

Write the formula for pentaamminechlorocobalt(III) chloride.

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

The ground state electron configuration of a transition element atom cannot have more than one incomplete subshell.

Correct Answer
verified

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

The maximum oxidation state of an element in the first transition series never exceeds its group number.

Correct Answer
verified

What is the difference between a coordination compound and a complex ion?

Correct Answer
verified
A coordination compound genera...
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Mercury(II) compounds are assimilated into the food chain because

Correct Answer
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Which of the following coordination numbers applies to octahedral complexes?

Correct Answer
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Which of the following transition elements can achieve the largest oxidation number?

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

Correct Answer
verified

a. How can the formation of a complex ion be described in terms of a theory of acids and bases? b. What is the essential requirement for a molecule or ion to act as a ligand?

Correct Answer
verified
a. According to Lewis, in an acid-base r...
View Answer

Exam 23: The Transition Elements and Their Coordination Compounds

Write the formula for pentaamminechlorocobalt(III) chloride.

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

The ground state electron configuration of a transition element atom cannot have more than one incomplete subshell.

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 AnswerverifiedShow Answer

The maximum oxidation state of an element in the first transition series never exceeds its group number.

Correct AnswerverifiedShow Answer

What is the difference between a coordination compound and a complex ion?

Correct AnswerverifiedA coordination compound genera...View AnswerShow Answer

Mercury(II) compounds are assimilated into the food chain because

Correct AnswerverifiedShow Answer

Which of the following coordination numbers applies to octahedral complexes?

Correct AnswerverifiedShow Answer

Which of the following transition elements can achieve the largest oxidation number?

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

Correct AnswerverifiedShow Answer

a. How can the formation of a complex ion be described in terms of a theory of acids and bases? b. What is the essential requirement for a molecule or ion to act as a ligand?

Correct Answerverifieda. According to Lewis, in an acid-base r...View AnswerShow Answer

Correct Answer
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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

Correct Answer
verified

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

Correct Answer
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A coordination compound genera...
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Correct Answer
verified

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

Correct Answer
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Correct Answer
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Correct Answer
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a. According to Lewis, in an acid-base r...
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