Question 1

Which statement is correct about transition metals?

Accepted Answer

A)   They have incompletely filled d subshells.
B)   They form ions with incompletely filled d subshells.
C)   They form paramagnetic compounds.
D)   They have catalytic activity.
E)   All of the answers are correct.F) All of the above
G) B) and D)

Question 2

Which one of these species is a bidentate ligand?

Accepted Answer

A)   CN-
B)   NH3
C)   CO
D)   H2NCH2CH2NH2
E)   EDTAF) A) and B)
G) B) and D)

Question 3

Which one of these species is a monodentate ligand?

Accepted Answer

A)   CN-
B)   EDTA
C)   C2O4-
D)   H2NCH2CH2NH2E) A) and C)
F) B) and D) A

Question 4

Which of these diagrams represent the crystal field splitting between d orbitals in an octahedral complex?

Accepted Answer

A)   
B)   
C)   
D)   E) B) and C)
F) B) and D) D

Question 5

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

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) A) and B)
G) All of the above

Question 6

Which of the following ligands is most likely to form a low-spin octahedral complex with iron(III) ?

Accepted Answer

A)   Cl-
B)   H2O
C)   NH3
D)   OH-
E)   COF) C) and E)
G) A) and E)

Question 7

What is 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)   [CoCl3](NH3) 5F) C) and D)
G) B) and D)

Question 8

In a coordination compound involving a complex ion of square planar geometry, which of the following types of isomerism is/are never possible?

Accepted Answer

A)   Geometric
B)   Optical
C)   Linkage
D)   Coordination
E)   More than one of these choices is correct.F) B) and D)
G) A) and B)

Question 9

What is the electron configuration of a ground-state Nb2+ ion?

Accepted Answer

A)   1s22s22p63s23p64s23d104p65s24d1
B)   1s22s22p63s23p64s23d104p64d3
C)   1s22s22p63s23p64s23d104p65s14d2
D)   1s22s22p63s23p64s23d104p64d5
E)   1s22s22p63s23p64s23d104p65s24d3F) A) and D)
G) D) and E)

Question 10

Which of the following is an example of a chelating agent?

Accepted Answer

A)   Bidentate ligand
B)   Polydentate ligand
C)   Both bidentate and polydentate ligands are chelating agents.
D)   None of these choices.E) None of the above
F) B) and C)

Question 11

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)   [CuBr4]2+F) A) and D)
G) A) and E)

Question 12

Ethylenediaminetetraacetic acid (EDTA) is an effective antidote for heavy metal poisoning (e.g., Pb2+ and Hg2+).

Accepted Answer

A) True 
 B)False

Question 13

What is the electron configuration of a ground-state Fe2+ ion?

Accepted Answer

A)   [Ar]3d5
B)   [Ar]4s13d5
C)   [Ar]3d6
D)   [Ar] 4s14d5
E)   [Ar]4d6F) B) and D)
G) A) and D)

Question 14

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

Accepted Answer

A)   +1
B)   +2
C)   +3
D)   -2
E)   -1F) B) and D)
G) None of the above

Question 15

Which of the following ions could exist in either the high-spin or low-spin state in an octahedral complex?

Accepted Answer

A)   Sc3+
B)   Ni2+
C)   Mn2+
D)   Ti4+
E)   Zn2+F) A) and B)
G) None of the above C

Question 16

If a solution absorbs green light, what is its likely color?

Accepted Answer

A)   Red
B)   Violet
C)   Orange
D)   Yellow
E)   BlueF) B) and D)
G) A) and B)

Question 17

What is the name of the chelating agent that is used to treat metal poisoning?

Accepted Answer

A)   PtCl6
B)   ETDA
C)   TGA
D)   ETA
E)   EDTAF) B) and D)
G) C) and D)

Question 18

Bidentate and polydentate ligands are called ________ ________.

Accepted Answer

The answer of Bidentate and polydentate ligands are called ________...

Question 19

What terms describe the geometrical isomers that are possible for the complex [Pt(NH3)2Cl4]?

Accepted Answer

Question 20

Which of the following will be diamagnetic?

Accepted Answer

A)   Ni2+
B)   Cr2+
C)   Mn2+
D)   Co3+
E)   Ti4+F) C) and E)
G) B) and C)

Exam 22: Coordination Chemistry

Which statement is correct about transition metals?

Correct AnswerverifiedShow Answer

Which one of these species is a bidentate ligand?

Correct AnswerverifiedShow Answer

Which one of these species is a monodentate ligand?

Correct AnswerverifiedA

Which of these diagrams represent the crystal field splitting between d orbitals in an octahedral complex?

Correct AnswerverifiedD

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

Correct AnswerverifiedShow Answer

Which of the following ligands is most likely to form a low-spin octahedral complex with iron(III) ?

Correct AnswerverifiedShow Answer

What is the formula for pentaamminechlorocobalt(III) chloride?

Correct AnswerverifiedShow Answer

In a coordination compound involving a complex ion of square planar geometry, which of the following types of isomerism is/are never possible?

Correct AnswerverifiedShow Answer

What is the electron configuration of a ground-state Nb2+ ion?

Correct AnswerverifiedShow Answer

Which of the following is an example of a chelating agent?

Correct AnswerverifiedShow Answer

Which of the following species could exist as isomers?

Correct AnswerverifiedShow Answer

Ethylenediaminetetraacetic acid (EDTA) is an effective antidote for heavy metal poisoning (e.g., Pb2+ and Hg2+).

Correct AnswerverifiedShow Answer

What is the electron configuration of a ground-state Fe2+ ion?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following ions could exist in either the high-spin or low-spin state in an octahedral complex?

Correct AnswerverifiedC

If a solution absorbs green light, what is its likely color?

Correct AnswerverifiedShow Answer

What is the name of the chelating agent that is used to treat metal poisoning?

Correct AnswerverifiedShow Answer

Bidentate and polydentate ligands are called ________ ________.

Correct AnswerverifiedShow Answer

What terms describe the geometrical isomers that are possible for the complex [Pt(NH3)2Cl4]?

Correct AnswerverifiedShow Answer

Which of the following will be diamagnetic?

Correct AnswerverifiedShow Answer

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A

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D

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

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What is the electron configuration of a ground-state Nb²⁺ ion?

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Ethylenediaminetetraacetic acid (EDTA) is an effective antidote for heavy metal poisoning (e.g., Pb²⁺and Hg²⁺).

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What is the electron configuration of a ground-state Fe²⁺ ion?

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

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C

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Bidentate and polydentate ligands are called .

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What terms describe the geometrical isomers that are possible for the complex [Pt(NH₃)₂Cl₄]?

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