42. What is the correct IUPAC name for [AuCl4(H2O)2]–?
A)
diaquatetrachloroaurate(I) ion
B)
diaquatetrachloroaurate(III) ion
C)
diaquatetrachloroaurate(0) ion
D)
diaquatetrachlorogold(III) ion
E)
diaquatetrachlorogold(I) ion
43. What is the correct formula for sodium tetrachlorocuprate(II)?
A)
Na3[CuCl4]
B)
Na2[CuCl4]
C)
Na[CuCl4]
D)
Na4[CuCl4]
E)
Na2[CuCl6]
44. What is the formula for the hexaaquacobalt(II) ion?
A)
[Co(H2O)6]2+
B)
[Co(H2O)4]2+
C)
[Co2(H2O)6]4–
D)
[Co2(H2O)6]2+
E)
[Co2(H2O)6]4+
45. What is the formula for the pentaamminehydroxovanadium(II) ion?
A)
[V(NH3)5(OH)5]2+
B)
[V(NH3)5(OH)5]3–
C)
[V(NH3)5(OH)]2+
D)
[V(NH3)5(OH)]+
E)
[V(NH3)(OH)5]3–
Test Bank General Chemistry, 10th edition 13
46. Which of the following are constitutional isomers?
I.
coordination isomers
II.
linkage isomers
III.
geometric isomers
IV.
optical isomers
A)
I, III, and IV
B)
II and III
C)
I and II
D)
I and III only
E)
II and IV only
47. The complexes [Ni(NH3)5Cl]Br and [Ni(NH3)5Br]Cl are what type of isomers?
A)
geometric isomers
B)
constitutional isomers
C)
stereoisomers
D)
linkage isomers
E)
optical isomers
48. How many geometric isomers are possible for the square planar complex [Pt(NH3)2BrCl]?
A)
2
B)
4
C)
5
D)
1
E)
3
49. What is the total number of geometric isomers possible for the octahedral complex
[Co(NH3)3(H2O)3]?
A)
1
B)
4
C)
5
D)
2
E)
3
50. Which complex is capable of forming geometric isomers?
A)
K3[FeCl6]
B)
[Co(NH3)5Br]Br2
C)
[Co(NH3)6]Br3
D)
[Pd(NH3)2Br2]
E)
[Pt(NH3)4]Br2
51. Molecules that have nonsuperimposable mirror images are
A)
multidentate.
B)
racemic.
C)
dextrorotatory.
D)
chiral.
E)
levorotatory.
52. Which of the following complexes can exhibit optical isomerism? (en = H2N—CH2—
CH2—NH2 and is bidentate)
A)
Co(NH3)3Cl3
B)
cis-Co(en)2Cl2
C)
trans-Co(en)2Br2
D)
cis-Co(NH3)4Cl2
E)
none of these
Test Bank General Chemistry, 10th edition 15
53. How many optical isomers do the cis and trans isomers of [Co(en)2Br2]+ have?
A)
cis, 1 and trans, 1
B)
cis, 2 and trans, 0
C)
cis, 0 and trans, 0
D)
cis, 0 and trans, 2
E)
cis, 2 and trans, 2
54. Which of the following compounds can exhibit optical activity?
A)
[Co(NH3)4Cl2]Cl
B)
[Co(NH2CH2CH2NH2)3]Cl3
C)
Na2[CoCl4]
D)
[Co(NH3)6]Cl3
E)
Cr(CO)6
55. What bond hybridization is associated with octahedral complexes?
A)
d2sp3
B)
sp3
C)
sp
D)
dsp3
E)
dsp2
56. Which of the following best describes the complex [Mn(H2O)6]2+?
A)
sp3 hybridization; diamagnetic
B)
d2sp3 hybridization; diamagnetic
C)
d2sp3 hybridization; paramagnetic
D)
dsp3 hybridization; diamagnetic
E)
sp3 hybridization; paramagnetic
57. Which of the following high-spin complexes has the most unpaired electrons?
A)
[Ti(H2O)6]2+
B)
[V(H2O)6]3+
C)
[Fe(H2O)6]3+
D)
[Cr(H2O)6]3+
E)
[Sc(H2O)]63+
58. According to valence bond theory, what hybrid orbitals are occupied by the ligands in the
complex [Mn(H2O)6]2+?
A)
dsp3
B)
sp3
C)
d2sp3
D)
sp2
E)
dsp2
59. Which of the metal ions in the following complex ions has a d5 electron configuration?
A)
V(H2O)62+
B)
RhCl64–
C)
Co(CN)4–
D)
Fe(CN)63–
E)
Mo(NH3)63+
60. In which of the following complexes does the transition metal have a d8 configuration?
A)
Cu(H2O)62+
B)
Fe(CN)63–
C)
Ni(CO)4
D)
PtCl42–
E)
Zn(NH3)42+
61. Which of the following describes a d6 metal-ion complex with ligands that bond strongly to
the metal ion?
A)
Pairing energy is less than crystal field splitting, giving a low-spin complex.
B)
Pairing energy is greater than crystal field splitting, giving a low-spin complex.
C)
Pairing energy is less than crystal field splitting, giving a high-spin complex.
D)
A d6 ion has only one possible electron arrangement regardless of the ligands.
E)
Pairing energy is greater than crystal field splitting, giving a high-spin complex.
62. Which combination leads to a high-spin octahedral complex?
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
63. The octahedral complex hexacyanoferrate(III) ion, [Fe(CN)6]3–, is a low-spin complex. How
many unpaired electrons does the complex have?
A)
5
B)
1
C)
4
D)
0
E)
3
64. If an octahedral iron(II) complex is diamagnetic, which of the following sets of conditions
best describes the complex?
A)
low spin, small
B)
high spin, large
C)
low spin, large
D)
high spin, small
E)
none of the above
65. How many unpaired electrons are there in an octahedral cobalt(III) complex with weak-
bonding ligands?
A)
1
B)
2
C)
4
D)
3
E)
0
66. Which of the following compounds is paramagnetic?
A)
Li4[Fe(NO2)6]
B)
K3[Co(CN)6]
C)
K3[ScCl6]
D)
Na2[TiBr6]
E)
[Mn(H2O)6]Cl2
67. 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?
A)
B)
C)
D)
E)
68. The complex ion NiCl42– is tetrahedral. The number of unpaired electrons in the complex is
A)
2.
B)
3.
C)
0.
D)
4.
E)
1.
69. How many unpaired electrons are there in the tetrahedral complex ion [FeCl4]–?
A)
3
B)
2
C)
1
D)
4
E)
5
70. Which of the following salts would not be expected to be colored in aqueous solution?
A)
NiCl2
B)
CuCl2
C)
CrCl2
D)
TiCl3
E)
CdCl2
71. Which of the following salts would not be expected to be colored in aqueous solution?
A)
CoCl2
B)
FeCl2
C)
CuCl2
D)
CuCl
E)
CrCl3
Test Bank General Chemistry, 10th edition 20
72. Which of the following salts would not be expected to be colored in aqueous solution?
A)
CrF3
B)
NiF2
C)
TiF3
D)
ScF3
E)
MnF3
73. Which of the following salts would be expected to be colored in aqueous solution?
A)
AlI3
B)
CuI
C)
TiCl4
D)
CrCl2
E)
ScI3
74. Which of the following statements concerning crystal field theory is incorrect?
A)
In an isolated metal ion the d-orbitals have identical energies.
B)
In low spin octahedral complexes the electrons are concentrated in the dxy, dxz, and
dyz orbitals.
C)
High spin complexes have the minimum of unpaired electrons.
D)
Strong bonding ligands favor a larger crystal field splitting () than weak bonding
ligands.
E)
Low spin complexes are favored when the electron pairing energy (P) is less than
the crystal field splitting ().
75. Which of the following statements concerning crystal field theory is/are correct?
1.
The visible absorption maxima of transition metal coordination complexes are
a measure of the crystal field splitting ().
2.
As the crystal field splitting () of a coordination complex increases, the
wavelength of visible light absorbed decreases.
3.
All tetrahedral complexes are high spin.
A)
1 only
B)
2 only
C)
3 only
D)
1 and 2
E)
1, 2, and 3
76. The spectrochemical series is an arrangement of
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 ().
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.