Question 1

Which of the following coordination numbers applies to octahedral complexes?

Accepted Answer

A)   4
B)   5
C)   6
D)   8
E)   None of these choices is correct.F) A) and B)
G) A) and E)

Question 2

Square planar complexes can exhibit both geometric and optical isomerism.

Accepted Answer

A) True 
 B)False

Question 3

When the ethylenediaminetetraacetate ion (EDTA4¯)  forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

Accepted Answer

A)   4
B)   6
C)   8
D)   10
E)   12F) B) and E)
G) C) and D)

Question 4

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

Accepted Answer

A) True 
 B)False  True

Question 5

The conversion of the chromate ion (CrO42¯) to the dichromate ion (Cr2O72¯) is a redox process.

Accepted Answer

A) True 
 B)False

Question 6

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  False

Question 7

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

Question 8

How many unpaired electrons will there be in a high-spin octahedral complex of Fe(II) ?

Accepted Answer

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

Question 9

The compound K3[Fe(CN) 6] is used in calico printing and wool dyeing. Give its systematic name.

Accepted Answer

A)   potassium iron(III)  hexacyanate
B)   tripotassium iron(III)  hexacyanate
C)   potassium hexacyanoferrate(III) 
D)   potassium hexacyanideferrate
E)   None of these choices is correct.F) C) and D)
G) B) and E)

Question 10

Why is the +2 oxidation state so common among transition elements?

Accepted Answer

The outermost (ns²) electrons are easily lost, producing the +2 oxidation state.

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

Which of the oxidation states of chromium has the largest valence-state electronegativity?

Accepted Answer

A)   chromium(0) 
B)   chromium(II) 
C)   chromium(III) 
D)   chromium(IV) 
E)   chromium(VI) F) A) and E)
G) A) and D)

Question 13

The compound Rh(CO)(H)(PH3)2 forms cis and trans isomers. Use this information to predict the geometry of this complex, and draw the geometric isomers.

Accepted Answer

The complex has four ligands a...

Question 14

Give the systematic name for [Cu(NH3) 4]Cl2.

Accepted Answer

A)   dichlorotetraamminecuprate(II) 
B)   tetraamminecopper(II)  chloride
C)   copper(II)  ammonium chloride
D)   tetraaminocopper(II)  chloride
E)   None of these choices is correct.F) A) and D)
G) A) and E)

Question 15

What is the highest possible oxidation state for palladium, Pd?

Accepted Answer

A)   +1
B)   +2
C)   +3
D)   +4
E)   +6F) B) and E)
G) D) and E)

Question 16

Which of the following species could exist as isomers?

Accepted Answer

A)   [Co(H2O) 4Cl2]+
B)   [Pt(NH3) Br3]¯
C)   [Pt(en) Cl2]
D)   [Pt(NH3) 3Cl]+
E)   None of these choices is correct.F) B) and C)
G) C) and D)

Question 17

The ground state electronic configuration of Zn2+ is:

Accepted Answer

A)   [Ar]4s23d8
B)   [Ar]4s23d10
C)   [Ar]4s13d9
D)   [Ar]3d10
E)   [Ar]3d8F) A) and B)
G) B) and E)

Question 18

The oxidation and coordination numbers of cobalt in the compound [Co(NH3) 5Cl]Cl2 are, respectively:

Accepted Answer

A)   2 and 6.
B)   2 and 8.
C)   3 and 6.
D)   3 and 8.
E)   None of these choices is correct.F) None of the above
G) C) and D)

Question 19

Give the systematic name for Cr(CO) 3(NH3) 3.

Accepted Answer

A)   chromiumtriaminotricarbonyl
B)   triamminechromium carbonate
C)   triamminetricarbonylchromate(0) 
D)   triamminetricarbonylchromium(0) 
E)   None of these choices is correct.F) D) and E)
G) A) and B)

Question 20

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) A) and C)

Exam 23: The Transition Elements and Their Coordination Compounds

Which of the following coordination numbers applies to octahedral complexes?

Correct AnswerverifiedShow Answer

Square planar complexes can exhibit both geometric and optical isomerism.

Correct AnswerverifiedShow Answer

When the ethylenediaminetetraacetate ion (EDTA4¯) forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedTrue

The conversion of the chromate ion (CrO42¯) to the dichromate ion (Cr2O72¯) is a redox process.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedFalse

Write the formula for pentaamminechlorocobalt(III) chloride.

Correct AnswerverifiedShow Answer

How many unpaired electrons will there be in a high-spin octahedral complex of Fe(II) ?

Correct AnswerverifiedShow Answer

The compound K3[Fe(CN) 6] is used in calico printing and wool dyeing. Give its systematic name.

Correct AnswerverifiedShow Answer

Why is the +2 oxidation state so common among transition elements?

Correct AnswerverifiedThe outermost (ns2) electrons are easily lost, producing the +2 oxidation state.

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

Correct AnswerverifiedShow Answer

Which of the oxidation states of chromium has the largest valence-state electronegativity?

Correct AnswerverifiedShow Answer

The compound Rh(CO)(H)(PH3)2 forms cis and trans isomers. Use this information to predict the geometry of this complex, and draw the geometric isomers.

Correct AnswerverifiedThe complex has four ligands a...View AnswerShow Answer

Give the systematic name for [Cu(NH3) 4]Cl2.

Correct AnswerverifiedShow Answer

What is the highest possible oxidation state for palladium, Pd?

Correct AnswerverifiedShow Answer

Which of the following species could exist as isomers?

Correct AnswerverifiedShow Answer

The ground state electronic configuration of Zn2+ is:

Correct AnswerverifiedShow Answer

The oxidation and coordination numbers of cobalt in the compound [Co(NH3) 5Cl]Cl2 are, respectively:

Correct AnswerverifiedShow Answer

Give the systematic name for Cr(CO) 3(NH3) 3.

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

Correct Answer
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Correct Answer
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When the ethylenediaminetetraacetate ion (EDTA⁴¯) forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

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

Correct Answer
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True

The conversion of the chromate ion (CrO₄²¯) to the dichromate ion (Cr₂O₇²¯) is a redox process.

Correct Answer
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Correct Answer
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False

Correct Answer
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Correct Answer
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The compound K₃[Fe(CN) ₆] is used in calico printing and wool dyeing. Give its systematic name.

Correct Answer
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Correct Answer
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The outermost (ns²) electrons are easily lost, producing the +2 oxidation state.

Correct Answer
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Correct Answer
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The compound Rh(CO)(H)(PH₃)₂ forms cis and trans isomers. Use this information to predict the geometry of this complex, and draw the geometric isomers.

Correct Answer
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The complex has four ligands a...
View Answer

Give the systematic name for [Cu(NH₃) ₄]Cl₂.

Correct Answer
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Correct Answer
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Correct Answer
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The ground state electronic configuration of Zn²⁺ is:

Correct Answer
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The oxidation and coordination numbers of cobalt in the compound [Co(NH₃) ₅Cl]Cl₂ are, respectively:

Correct Answer
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Give the systematic name for Cr(CO) ₃(NH₃) ₃.

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

Correct Answer
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