Question 1

Which of the following coordination compounds will immediately form a precipitate when combined with an AgNO3 solution?

Accepted Answer

A) K[Cr(NH3)2Cl4] 
B) K3[Cr(CN)6] 
C) [Cr(NH3)6]Cl3 
D) [Cr(NH3)2(H2O)Cl3] 
E) [Cr(NH3)3Cl3] 
A) K[Cr(NH3)2Cl4] 
B) K3[Cr(CN)6] 
C) [Cr(NH3)6]Cl3 
D) [Cr(NH3)2(H2O)Cl3] 
E) [Cr(NH3)3Cl3]

Question 2

Which of the following is a product of the acidification of sodium chromate?

Accepted Answer

A) CrO42-(aq) 
B) Cr2O72-(aq) 
C) Cr3+(aq) 
D) CrO3(s) 
E) Cr(s) 
A) CrO42-(aq) 
B) Cr2O72-(aq) 
C) Cr3+(aq) 
D) CrO3(s) 
E) Cr(s)

Question 3

How is pure chromium metal prepared?

Accepted Answer

A) ​By exothermic reaction of chromium (VI)oxide,obtained from aluminum ore,with steel 
B) ​By endothermic reaction of chromium (III)oxide,obtained from chromite ore,with aluminum 
C) ​By endothermic reaction of chromium (II)oxide,obtained from iron ore,with copper 
D) ​By exothermic reaction of chromium (III)oxide,obtained from chromite ore,with aluminum 
E) ​By endothermic reaction of chromium (VI)oxide,obtained from aluminum ore,with brass 
A) ​By exothermic reaction of chromium (VI)oxide,obtained from aluminum ore,with steel 
B) ​By endothermic reaction of chromium (III)oxide,obtained from chromite ore,with aluminum 
C) ​By endothermic reaction of chromium (II)oxide,obtained from iron ore,with copper 
D) ​By exothermic reaction of chromium (III)oxide,obtained from chromite ore,with aluminum 
E) ​By endothermic reaction of chromium (VI)oxide,obtained from aluminum ore,with brass

Question 4

Copper metal can be oxidized by which of the following acids?

Accepted Answer

A) H3PO4 
B) HBr 
C) H2SO4 
D) CH3COOH 
E) HCl 
A) H3PO4 
B) HBr 
C) H2SO4 
D) CH3COOH 
E) HCl

Question 5

_____ is a model of the electronic structure of transition-metal complexes that considers how the energies of the d orbitals of a metal ion are affected by the electric field of the ligands.

Accepted Answer

A) ​Valence bond theory 
B) ​Mixed potential theory 
C) ​Toba catastrophe theory 
D) ​Crystal field theory 
E) ​Lorentz ether theory 
A) ​Valence bond theory 
B) ​Mixed potential theory 
C) ​Toba catastrophe theory 
D) ​Crystal field theory 
E) ​Lorentz ether theory

Question 6

Which of the following Lewis bases may not serve as a bidentate ligand?

Accepted Answer

A) C2O42- 
B) NH2CH2CH2NH2 
C) HOCH2CH2NH2 
D) HOCH2CH2OH 
E) CH3NH2 
A) C2O42- 
B) NH2CH2CH2NH2 
C) HOCH2CH2NH2 
D) HOCH2CH2OH 
E) CH3NH2

Question 7

The oxidation number of which of the following elements is often +2 but can be as great as +7?

Accepted Answer

A) manganese 
B) cobalt 
C) aluminum 
D) bismuth 
E) chromium 
A) manganese 
B) cobalt 
C) aluminum 
D) bismuth 
E) chromium

Question 8

What is the maximum oxidation state expected for manganese?

Accepted Answer

A) +7 
B) +4 
C) +5 
D) +8 
E) +6 
A) +7 
B) +4 
C) +5 
D) +8 
E) +6

Question 9

Which of the following is a necessary characteristic of a ligand?

Accepted Answer

A) A ligand must be an anion. 
B) A ligand must be an ion. 
C) A ligand must be a Lewis base. 
D) A ligand must be bidentate. 
E) A ligand must be a Lewis acid. 
A) A ligand must be an anion. 
B) A ligand must be an ion. 
C) A ligand must be a Lewis base. 
D) A ligand must be bidentate. 
E) A ligand must be a Lewis acid.

Question 10

1s22s22p63s23p64s23d2 is the correct electron configuration for which of the following atoms?

Accepted Answer

A) Ti 
B) Ca 
C) Ge 
D) Zr 
E) none of these 
A) Ti 
B) Ca 
C) Ge 
D) Zr 
E) none of these

Question 11

Which of the following species is least likely to function as a ligand in a transition-metal coordination compound?

Accepted Answer

A) NH3 
B) CO32- 
C) H2O 
D) BF3 
E) Cl- 
A) NH3 
B) CO32- 
C) H2O 
D) BF3 
E) Cl-

Question 12

Which of the following high-spin complexes has the most unpaired electrons?

Accepted Answer

A) [Ti(H2O)6]2+ 
B) [V(H2O)6]3+ 
C) [Fe(H2O)6]3+ 
D) [Cr(H2O)6]3+ 
E) [Sc(H2O)]63+ 
A) [Ti(H2O)6]2+ 
B) [V(H2O)6]3+ 
C) [Fe(H2O)6]3+ 
D) [Cr(H2O)6]3+ 
E) [Sc(H2O)]63+

Question 13

What is the oxidation state of iron in K4[Fe(CN)6]?

Accepted Answer

A) 3 
B) 2 
C) 4 
D) −4 
E) 6 
A) 3 
B) 2 
C) 4 
D) −4 
E) 6

Question 14

The spectrochemical series is an arrangement of

Accepted Answer

A) ligands in order of their tendency to split the d orbitals of a transition metal ion. 
B) coordination compounds in order of increasing ligand field splitting (Δ). 
C) complex ions in order of the wavelength of light absorbed. 
D) ligands in the order of electronegativity. 
E) ligands in order of Lewis basicity. 
A) ligands in order of their tendency to split the d orbitals of a transition metal ion. 
B) coordination compounds in order of increasing ligand field splitting (Δ). 
C) complex ions in order of the wavelength of light absorbed. 
D) ligands in the order of electronegativity. 
E) ligands in order of Lewis basicity.

Question 15

A complex ion is a square planar complex.It has a d8 electron configuration.What is the most reasonable d orbital scheme for this complex?

Accepted Answer

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

Question 16

An element with the electron configuration [Xe]6s24f145d7 would belong to which class on the periodic table?

Accepted Answer

A) rare-earth elements 
B) transition elements 
C) alkaline-earth elements 
D) halogens 
E) none of the above 
A) rare-earth elements 
B) transition elements 
C) alkaline-earth elements 
D) halogens 
E) none of the above

Question 17

Fe has __________ that is(are)unpaired in its d orbitals.

Accepted Answer

A) 3 electrons 
B) 4 electrons 
C) 1 electron 
D) 2 electrons 
E) 5 electrons 
A) 3 electrons 
B) 4 electrons 
C) 1 electron 
D) 2 electrons 
E) 5 electrons

Question 18

Which combination leads to a high-spin octahedral complex?

Accepted Answer

A) low pairing energy and a weak-bonding ligand 
B) high pairing energy and a weak-bonding ligand 
C) moderate pairing energy and a strong-bonding ligand 
D) high pairing energy and a strong-bonding ligand 
E) low pairing energy and a strong-bonding ligand 
A) low pairing energy and a weak-bonding ligand 
B) high pairing energy and a weak-bonding ligand 
C) moderate pairing energy and a strong-bonding ligand 
D) high pairing energy and a strong-bonding ligand 
E) low pairing energy and a strong-bonding ligand

Question 19

Molecules that have nonsuperimposable mirror images are

Accepted Answer

A) multidentate. 
B) racemic. 
C) dextrorotatory. 
D) chiral. 
E) levorotatory. 
A) multidentate. 
B) racemic. 
C) dextrorotatory. 
D) chiral. 
E) levorotatory.

Question 20

The complexes [Ni(NH3)5Cl]Br and [Ni(NH3)5Br]Cl are what type of isomers?

Accepted Answer

A) geometric isomers 
B) constitutional isomers 
C) stereoisomers 
D) linkage isomers 
E) optical isomers 
A) geometric isomers 
B) constitutional isomers 
C) stereoisomers 
D) linkage isomers 
E) optical isomers

Exam 22: The Transition Elements and Coordination Compounds

Which of the following coordination compounds will immediately form a precipitate when combined with an AgNO3 solution?

Which of the following is a product of the acidification of sodium chromate?

How is pure chromium metal prepared?

Copper metal can be oxidized by which of the following acids?

_____ is a model of the electronic structure of transition-metal complexes that considers how the energies of the d orbitals of a metal ion are affected by the electric field of the ligands.

Which of the following Lewis bases may not serve as a bidentate ligand?

The oxidation number of which of the following elements is often +2 but can be as great as +7?

What is the maximum oxidation state expected for manganese?

Which of the following is a necessary characteristic of a ligand?

1s22s22p63s23p64s23d2 is the correct electron configuration for which of the following atoms?

Which of the following species is least likely to function as a ligand in a transition-metal coordination compound?

Which of the following high-spin complexes has the most unpaired electrons?

What is the oxidation state of iron in K4[Fe(CN)6]?

The spectrochemical series is an arrangement of

A complex ion is a square planar complex.It has a d8 electron configuration.What is the most reasonable d orbital scheme for this complex?

An element with the electron configuration [Xe]6s24f145d7 would belong to which class on the periodic table?

Fe has __________ that is(are)unpaired in its d orbitals.

Which combination leads to a high-spin octahedral complex?

Molecules that have nonsuperimposable mirror images are

The complexes [Ni(NH3)5Cl]Br and [Ni(NH3)5Br]Cl are what type of isomers?

Chemistry and Measurement

Atoms, molecules, and Ions

Calculations With Chemical Formulas and Equations

Chemical Reactions

The Gaseous State

Thermochemistry

Quantum Theory of the Atom

Electron Configurations and Periodicity

Ionic and Covalent Bonding

Molecular Geometry and Chemical Bonding Theory

States of Matter; Liquids and Solids

Solutions

Rates of Reaction

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Thermodynamics and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry of the Main-Group Metals

Organic Chemistry

Polymer Materials: Synthetic and Biological

Filters

Which of the following coordination compounds will immediately form a precipitate when combined with an AgNO₃ solution?

1s²2s²2p⁶3s²3p⁶4s²3d² is the correct electron configuration for which of the following atoms?

What is the oxidation state of iron in K₄[Fe(CN)₆]?

A complex ion is a square planar complex.It has a d⁸ electron configuration.What is the most reasonable d orbital scheme for this complex?

An element with the electron configuration [Xe]6s²4f¹⁴5d⁷ would belong to which class on the periodic table?

The complexes [Ni(NH₃)₅Cl]Br and [Ni(NH₃)₅Br]Cl are what type of isomers?