Question 1

The electron configuration of a nickel atom is

Accepted Answer

A)  [Ar]4s23d6.
B)  [Ar]4s13d7.
C)  [Ar]3d8.
D)  [Ar]4s23d8.
E)  [Ar]3d10.F) A) and D)
G) None of the above

Question 2

In the complex ion [ML6]n+, Mn+ has seven d electrons and L is a weak field ligand.According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons?

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  5F) B) and E)
G) A) and D)

Question 3

The correct formula for dicarbonylsilver (I) ion is:

Accepted Answer

A)  Ag(CO) 2
B)  [Ag(CO) 2]+
C)  [Ag(CO) 2]2+
D)  [Ag(CO) 2]-
E)  [Ag(CO) 2]2-F) A) and E)
G) A) and B)

Question 4

How many unpaired electrons are there in the complex ion [Mn(CN) 6]3-?

Accepted Answer

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

Question 5

For the complex below determine 
(a)the oxidation number of the metal, 
(b)the number of d electrons, 
(c)the coordination number, 
(d)the charge of the complex ion, and 
(e)the number and type of ligands for the coordination compound shown below.

Accepted Answer

(a)+3,
(b)3 d elect...

Question 6

Predict the number of unpaired electrons in the [Fe(CN)6]4- ion.

Accepted Answer

Question 7

The number of geometrical isomers and optical isomers of the complex ion [Co(en) 3]3+ are, respectively,

Accepted Answer

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

Question 8

Write the chemical formula of the dibromobis(oxalato)cobaltate(III)ion.

Accepted Answer

The answer of Write the chemical formula of the dibromobis(oxalato)cobaltate(III)ion....

Question 9

In the coordination compound K2[Co(en) Cl4], the coordination number (C.N.) and oxidation number (O.N.) of cobalt are

Accepted Answer

A)  C.N.= 6; O.N.= +2.
B)  C.N.= 6; O.N.= +3.
C)  C.N.= 5; O.N.= +2.
D)  C.N.= 5; O.N.= +4.
E)  C.N.= 4; O.N.= +3.F) D) and E)
G) A) and C)

Question 10

Which of these complex ions would absorb light with the longest wavelength?

Accepted Answer

A)  [Co(H2O) 6]2+
B)  [Co(NH3) 6]2+
C)  [CoF6]4-
D)  [Co(CN) 6]4-
E)  [Co(en) 6]2+F) A) and B)
G) None of the above

Question 11

The electron configuration of a Ti atom is

Accepted Answer

A)  [Ne]3s23d2.
B)  [Ne] 3s24d2.
C)  [Ar]4s23d2.
D)  [Ar]4s24d2.
E)  [Ar]3d4.F) A) and E)
G) All of the above

Question 12

The correct formula for sodium tetracyanonickelate(II) ion is:

Accepted Answer

A)  Ni(CN) 4
B)  [Ni(CN) 4]+
C)  [Ni(CN) 4]2+
D)  [Ni(CN) 4]-
E)  [Ni(CN) 4]2-F) All of the above
G) B) and E)

Question 13

In the complex ion [Fe(CN) 6]4-, the oxidation number of Fe is

Accepted Answer

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

Question 14

In the complex ion [ML6]n+, Mn+ has five d electrons and L is a strong field ligand.According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons?

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  5F) D) and E)
G) A) and E)

Question 15

In the complex ion [Cr(C2O4) 2(H2O) 2]-, the oxidation number of Cr is

Accepted Answer

A)  +1.
B)  +2.
C)  +3.
D)  -2.
E)  -1.F) B) and C)
G) B) and D)

Question 16

Cis-platinum complexes are

Accepted Answer

A)  used in the extraction of silver and gold.
B)  effective antidotes for heavy metal poisoning (e.g., Pb2+ and Hg2+) .
C)  used to provide nutrients for plants.
D)  used to prevent eutrophication of lakes.
E)  effective antitumor agents.F) A) and B)
G) A) and C)

Question 17

Which of these octahedral complexes can have cis-trans isomers?

Accepted Answer

A)  Co(NH3) 3Cl3
B)  [Co(NH3) 5Cl]Cl2
C)  [Co(NH3) 6]Cl3
D)  Na3[CoCl6]
E)  Na2[Co(NH3) Cl5]F) A) and B)
G) All of the above

Question 18

The total number of electrons in the 3d orbitals of a copper atom is

Accepted Answer

A)  6
B)  7
C)  8
D)  9
E)  10F) A) and E)
G) B) and E)

Question 19

Which of these ligands produces the weakest crystal field?

Accepted Answer

A)  CN-
B)  I-
C)  OH-
D)  H2O
E)  NH3F) B) and C)
G) A) and D)

Question 20

Write the chemical formula of triammineaquodichlorochromium(III)chloride.

Accepted Answer

The answer of Write the chemical formula of triammineaquodichlorochromium(III)chloride....

Exam 23: Transition Metal Chemistry and Coordination Compounds

The correct formula for sodium tetracyanonickelate(II) ion is:

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The electron configuration of a nickel atom is

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The number of geometrical isomers and optical isomers of the complex ion [Co(en) 3]3+ are, respectively,

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In the complex ion [Cr(C2O4) 2(H2O) 2]-, the oxidation number of Cr is

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How many unpaired electrons are there in the complex ion [Mn(CN) 6]3-?

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For the complex below determine (a)the oxidation number of the metal, (b)the number of d electrons, (c)the coordination number, (d)the charge of the complex ion, and (e)the number and type of ligands for the coordination compound shown below.

Correct Answerverified(a)+3, (b)3 d elect...View AnswerShow Answer

In the complex ion [Fe(CN) 6]4-, the oxidation number of Fe is

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Which of these complex ions would absorb light with the longest wavelength?

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The correct formula for dicarbonylsilver (I) ion is:

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In the coordination compound K2[Co(en) Cl4], the coordination number (C.N.) and oxidation number (O.N.) of cobalt are

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In the complex ion [ML6]n+, Mn+ has seven d electrons and L is a weak field ligand.According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons?

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The total number of electrons in the 3d orbitals of a copper atom is

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Predict the number of unpaired electrons in the [Fe(CN)6]4- ion.

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Which of these ligands produces the weakest crystal field?

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Write the chemical formula of the dibromobis(oxalato)cobaltate(III)ion.

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Cis-platinum complexes are

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The electron configuration of a Ti atom is

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Which of these octahedral complexes can have cis-trans isomers?

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Write the chemical formula of triammineaquodichlorochromium(III)chloride.

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In the complex ion [ML6]n+, Mn+ has five d electrons and L is a strong field ligand.According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons?

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The number of geometrical isomers and optical isomers of the complex ion [Co(en) ₃]³⁺ are, respectively,

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In the complex ion [Cr(C₂O₄) ₂(H₂O) ₂]^-, the oxidation number of Cr is

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How many unpaired electrons are there in the complex ion [Mn(CN) ₆]^3-?

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(a)+3,
(b)3 d elect...
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In the complex ion [Fe(CN) ₆]^4-, the oxidation number of Fe is

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In the coordination compound K₂[Co(en) Cl₄], the coordination number (C.N.) and oxidation number (O.N.) of cobalt are

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In the complex ion [ML₆]ⁿ⁺, Mⁿ⁺ has seven d electrons and L is a weak field ligand.According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons?

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Predict the number of unpaired electrons in the [Fe(CN)₆]^4- ion.

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In the complex ion [ML₆]ⁿ⁺, Mⁿ⁺ has five d electrons and L is a strong field ligand.According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons?

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