Question 1

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

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)    D

Question 2

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+ 
A)  Sc3+ 
B)  Ni2+ 
C)  Mn2+ 
D)  Ti4+ 
E)  Zn2+ C

Question 3

Which one of these species is a monodentate ligand?

Accepted Answer

A)  CN- 
B)  EDTA 
C)  C2O4- 
D)  H2NCH2CH2NH2 
A)  CN- 
B)  EDTA 
C)  C2O4- 
D)  H2NCH2CH2NH2 A

Question 4

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)  CO 
A)  Cl- 
B)  H2O 
C)  NH3 
D)  OH- 
E)  CO

Question 5

Bidentate and polydentate ligands are called ________ ________.

Accepted Answer

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

Question 6

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

Accepted Answer

A)  Red 
B)  Violet 
C)  Orange 
D)  Yellow 
E)  Blue 
A)  Red 
B)  Violet 
C)  Orange 
D)  Yellow 
E)  Blue

Question 7

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+ 
A)  [Co(H2O)4Cl2]+ 
B)  [Pt(NH3)Br3]- 
C)  [Pt(en)Cl2] 
D)  [Pt(NH3)3Cl]+ 
E)  [CuBr4]2+

Question 8

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. 
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.

Question 9

Which of the following will be diamagnetic?

Accepted Answer

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

Question 10

Which one of these species is a bidentate ligand?

Accepted Answer

A)  CN- 
B)  NH3 
C)  CO 
D)  H2NCH2CH2NH2 
E)  EDTA 
A)  CN- 
B)  NH3 
C)  CO 
D)  H2NCH2CH2NH2 
E)  EDTA

Question 11

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)  -1 
A)  +1 
B)  +2 
C)  +3 
D)  -2 
E)  -1

Question 12

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

Accepted Answer

Question 13

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

Question 14

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)5 
A)  [Co(NH3)5Cl]Cl 
B)  [Co(NH3)5Cl]Cl2 
C)  [Co(NH3)5Cl]Cl3 
D)  [Co(NH3)5Cl]Cl4 
E)  [CoCl3](NH3)5

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

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)  EDTA 
A)  PtCl6 
B)  ETDA 
C)  TGA 
D)  ETA 
E)  EDTA

Question 17

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

Accepted Answer

A)  1s22s22p63s23p64s23d104p65s24d1 
B)  1s22s22p63s23p64s23d104p64d3 
C)  1s22s22p63s23p64s23d104p65s14d2 
D)  1s22s22p63s23p64s23d104p64d5 
E)  1s22s22p63s23p64s23d104p65s24d3 
A)  1s22s22p63s23p64s23d104p65s24d1 
B)  1s22s22p63s23p64s23d104p64d3 
C)  1s22s22p63s23p64s23d104p65s14d2 
D)  1s22s22p63s23p64s23d104p64d5 
E)  1s22s22p63s23p64s23d104p65s24d3

Question 18

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. 
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.

Question 19

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

Question 20

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

Exam 22: Coordination Chemistry

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

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

Which one of these species is a monodentate ligand?

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

Bidentate and polydentate ligands are called ________ ________.

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

Which of the following species could exist as isomers?

Which statement is correct about transition metals?

Which of the following will be diamagnetic?

Which one of these species is a bidentate ligand?

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

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

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

What is the formula for pentaamminechlorocobalt(III) chloride?

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

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

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

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

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

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

Chemistry: the Central Science

Atoms, Molecules, and Ions

Stoichiometry: Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy, Free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

Bidentate and polydentate ligands are called .

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

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

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

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

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

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