85) Which of the following complexes has five unpaired electrons?
A) [Mn(H2O)6]2+
B) [Mn(CN)6]3-
C) CrCl3(H2O)3
D) [Ag(NH3)2]+
86) Which of the following complexes are diamagnetic?
[Mn(CN)6]3- [Zn(NH3)4]2+ [Fe(CN)6]4- [FeF6]3-
A) [Zn(NH3)4]2+
B) [Zn(NH3)4]2+ and [FeF6]3-
C) [Zn(NH3)4]2+ and [Fe(CN)6]4-
D) [Mn(CN)6]3-, [Zn(NH3)4]2+ and [Fe(CN)6]4-
87) For an octahedral complex what metal d orbitals are directly towards the ligands?
A) dxy, dxz
B) dxy, dxz, dyz
C) dz², dx²–y²
D) dz², dxz, dyz
88) What is the expected order for increasing octahedral (Δ0) crystal field splitting for the
ligands I–, F–, H2O, NH3, en, CO?
A) I– < F– < H2O < NH3 < en < CO
B) F– < I– < NH3 < en < CO < H2O
C) I– < F– < H2O < CO < NH3 < en
D) CO < en < NH3 < H2O < F– < I–
89) What is the expected order for increasing octahedral (Δ0) crystal field splitting for ligands?
A) halides < O ligands < N ligands < CN–
B) halides < CN– < O ligands < N ligands
C) CN– < N ligands < O ligands < halides
D) O ligands < N ligands < CN– < halides
90) What is the crystal field energy level diagram for the complex [Fe(H2O)6]3+?
A) (A)
B) (B)
C) (C)
D) (D)
91) What is the crystal field energy level diagram for the complex [Co(CN)6]3-?
A) (A)
B) (B)
C) (C)
D) (D)
92) Which ion would you expect to have the largest crystal field splitting, △?
A) [Fe(CN)6]4-
B) [Fe(CN)6]3-
C) [Fe(H2O)6]2+
D) [Fe(H2O)6]3+
93) What statement is inconsistent with the crystal field theory of tetrahedral complexes?
A) Δt is about 4/9’s that of Δ0.
B) Tetrahedral complexes are nearly all low spin.
C) The dxy, dxz, and dyz orbitals are higher in energy than the dz² and dx²–y² orbitals.
D) None of the metal d orbitals point directly at the ligands in a tetrahedral environment.
94) Which one of the following complexes is considered to be tetrahedral?
A) [FeCl4]–
B) [Ni(CN)4]2-
C) [PtCl4]2-
D) [PdCl2(NH3)2]
95) Assume the absorption of the following complex ions can be measured as one broad band.
Which of the following is expected to have an absorption band with the shortest wavelength?
A) [Fe(N
B) [Fe(CN
C) [FeC
D) [FeB
96) How many unpaired electrons will Co have in the complex [CoCl4]2-?
A) 1
B) 3
C) 4
D) 5
97) Which group of elements, indicated by letter and shading on the periodic table above,
represents the transition elements?
A) A
B) B
C) C
D) D
98) Which group of elements, indicated by letter and shading on the periodic table above,
represents the inner transition elements?
A) A
B) B
C) C
D) D
99) Which element indicated on the above periodic table has the electron configuration [Kr] 4d5
5s2?
A) element A
B) element B
C) element C
D) element D
100) Which element indicated on the above periodic table has the electron configuration [Xe] 4f7
5d1 6s2?
A) element A
B) element B
C) element C
D) element D
101) Which element indicated on the above periodic table has the electron configuration [Ar]
3d3 4s2?
A) element A
B) element B
C) element C
D) element D
102) Which element indicated on the above periodic table has the electron configuration [Ar]
3d10 4s1?
A) element A
B) element B
C) element C
D) element D
103) Which is the most common ion formed by element B on the above periodic table?
A) B5+
B) B2+
C) B3+
D) B4+
The first transition series metals are shown below.
104) Which has the highest melting point?
A) Sc
B) V
C) Mn
D) Zn
105) Which has the lowest melting point?
A) Sc
B) V
C) Mn
D) Zn
106) Which has the largest atomic radius?
A) Sc
B) V
C) Ni
D) Zn
107) Which has the smallest atomic radius?
A) Sc
B) V
C) Ni
D) Zn
108) Which has the greatest density?
A) Sc
B) V
C) Cu
D) Zn
109) Which has the most positive standard oxidation potential?
A) Sc
B) V
C) Cu
D) Zn
110) Which has the most negative standard oxidation potential?
A) Sc
B) V
C) Cu
D) Zn
111) Based on the variation in Zeff, which M2+ ion should be the strongest reducing agent?
A) Ti
B) Cr
C) Fe
D) Zn
112) Based on the variation in Zeff, which M2+ ion should be the weakest reducing agent?
A) Ti
B) Cr
C) Fe
D) Zn
113) Based on the variation in Zeff, which oxoanion should be the strongest oxidizing agent?
A) VO43-
B) CrO42-
C) MnO42-
D) FeO42-
114) Based on the variation in Zeff, which oxoanion should be the weakest oxidizing agent?
A) VO43-
B) CrO42-
C) MnO42-
D) FeO42-
115) Which metal exhibits the highest oxidation state in its compounds?
A) Sc
B) Cr
C) Mn
D) Zn
The second transition series metals are shown below.
116) Which has the highest melting point?
A) Y
B) Mo
C) Tc
D) Cd
117) Which has the lowest melting point?
A) Y
B) Mo
C) Tc
D) Cd
118) Which has the largest atomic radius?
A) Y
B) Mo
C) Rh
D) Cd
119) Which has the smallest atomic radius?
A) Y
B) Mo
C) Rh
D) Cd
120) Which has the greatest density?
A) Y
B) Mo
C) Rh
D) Cd
121) Which has the lowest density?
A) Y
B) Mo
C) Rh
D) Cd
The third transition series metals are shown below.
122) Which has the highest melting point?
A) Lu
B) W
C) Os
D) Hg
123) Which has the lowest melting point?
A) Lu
B) W
C) Os
D) Hg
124) Which has the largest atomic radius?
A) Lu
B) W
C) Os
D) Hg
125) Which has the smallest atomic radius?
A) Lu
B) W
C) Os
D) Hg
126) Which has the greatest density?
A) Lu
B) W
C) Os
D) Hg
127) Which has the lowest density?
A) Lu
B) W
C) Os
D) Hg
128) Which of the above are bidentate ligands?
A) All are bidentate.
B) (a) and (b)
C) (c) and (d)
D) None are bidentate.
129) Which of the above are monodentate ligands?
A) All are monodentate.
B) (a) and (b)
C) (c) and (d)
D) None are monodentate.
130) Which of the above are ligands that contain two or more donor atoms?
A) All contain two or more donor atoms.
B) (a) and (b)
C) (c) and (d)
D) None contain two or more donor atoms.