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Chemistry: A Molecular Approach, 2e (Tro)
Chapter 24 Transition Metals and Coordination Compounds
Multiple Choice Questions
1) Identify the ion that is responsible for the red color of rubies.
A) Cr3+
B) Cr4+
C) Cr5+
D) Cr6+
E) Cr7+
2) Identify the ion that is responsible for the green color in emeralds.
A) Cr3+
B) Cr4+
C) Cr5+
D) Cr6+
E) Cr7+
3) Identify the ion that is responsible for the blue of turquoise.
A) Cr2+
B) Cu+
C) Cu2+
D) Cr3+
E) Fe2+
4) Identify the ion that is responsible for the red in garnet and the yellow-green of peridot.
A) Cr2+
B) Cu+
C) Cu2+
D) Cr3+
E) Fe2+
5) Choose the electron configuration for Fe3+.
A) [Ar]4s23d3
B) [Ar]3d5
C) [Ar]4s23d9
D) [Ar]4s13d4
E) [Ar]4s23d6
Answer: B
Diff: 2 Page Ref: 24.2
6) Name the following: Fe[AlF6]
A) ironaluminumhexafluoride
B) iron(II) hexafluoroaluminum
C) iron (III) hexafluoroaluminate
D) iron(I) aluminumhexafluoride
E) aluminumhexafluoroferrate
7) Name the following: [Fe(H2O)4Br2]Cl
A) tetraaquadibromoiron(II) chloride
B) dibromotetrahydroironchloride
C) dibromotetrahydroiron(II)chloride
D) tetraaquadibromoiron(III) chloride
E) iron(II)dibromotetraquachloride
8) Name the following: [Ni(NH3)3(H2O)3]Cl2
A) nickel(II)trihydrotriamminechloride
B) nickel(I)triamminetrihydrochloride
C) dichloronickel(II)triamminetrihydride
D) nickel(III)chloride
E) triamminetriaquanickel(II)chloride
9) Name the following: [Pt(H2O)4F2]Br2
A) tetraaquadifluoroplatinum(IV) bromide
B) tetraaquadibromodifluoroplatinate
C) platinum(II)bromide
D) platinum(III)tetraaquadifluorobromide
E) platinum (II) dibromodifluorotetrahydride
10) Name the following: [Fe(CO)6][Ag(CN)2]2
A) iron(III)hexacarbonylsilverdicyanide
B) hexacarbonyliron(II) dicyanoargentate
C) iron(II) carbonyl silvercyanide
D) hexacarbonyliron(III) dicyanosilvate
E) iron(II)hexacarbonyl silvercyanide
11) Determine the chemical formula for the compound, diamminetetraaquairon(II)chloride.
A) [Fe(NH3)2(H2O)4Cl]
B) [Fe(NH3)2][(H2O)4Cl]
C) [Fe(NH3)2(H2O)4]Cl2
D) [Fe(H2O)4][(NH3)2Cl]
E) [Fe(NH3)2(H2O)4]Cl3
12) Determine the chemical formula for the compound, hexaammineiron(III) hexacyanoferrate(III).
A) [Fe2(NH3)6(CN)6]3+
B) [Fe(NH3)6][Fe(CN)6]2
C) [Fe(NH3)6]3[Fe(CN)6]2
D) [Fe(NH3)6][Fe(CN)6]
E) [Fe2(NH3)3(CN)3]6+
13) Determine the chemical formula for the compound, diaquadicarbonylzinc tetrabromopalladate (IV).
A) [PdZn(H2O)2(CO)2]Br4
B) [Zn(H2O)2(CO)2]2[PdBr4]
C) [Pd(H2O)2][Zn(CO)2]Br4
D) [Pd(H2O)2]2[Zn(CO)2]3Br4
E) [Zn(H2O)2(CO)2][PdBr4]
14) Determine the chemical formula for the compound, potassiumtrisethylenediamine chromate(III).
A) K3[Cr(NH2CH2CH2NH2)3]
B) [K(NH2CH2CH2NH2)3]Cr3+
C) [KCr(NH2CH2CH2NH2)3]3+
D) K2[Cr(NH2CH2CH2NH2)4]
E) [Cr(NH2CH2CH2NH2)2]K2
4
15) Determine the chemical formula for the compound, tetracarbonylplatinum(IV) chloride.
A) [Pt(CO)4]Cl2
B) [Pt(CO)4]Cl4
C) [Pt(CO)4Cl4]2-
D) [PtCl4](CO)4
E) [Pt(CO)4Cl4]4-
16) Identify the isomers that have ligands with different spatial arrangements about the metal ions.
A) linkage isomers
B) geometric isomers
C) coordination isomers
D) optical isomers
E) structural isomers
17) Identify the isomers that have ligands which coordinates to metal in different ways.
A) linkage isomers
B) geometric isomers
C) coordination isomers.
D) optical isomers
E) stereoisomers.
18) Which of the following pairs of coordination compounds or complex ions are examples of
coordination isomers?
A) [Fe(CO)5NO2]2+ and [Fe(CO)5ONO]2+
B) [Fe(NH3)2(H2O)4]Cl2 and [Fe(NH3)2(H2O)4]Br2
C) [Fe(NH3)2(H2O)4]Cl2 and [Fe(NH3)4(H2O)2]Cl2
D) [Cu(CO)5Br]Cl and [Cu(CO)5Cl]Br
E) [MnCl3Br]2- and [MnClBr3]2-
19) Which of the following pairs of coordination compounds or complex ions are examples of linkage
isomers?
A) [Cu(NH3)5Br]Cl and [Cu(NH3)5Cl]Br
B) [Fe(NH3)2(H2O)4]Cl2 and [Fe(NH3)4(H2O)2]Cl2
C) [Fe(CO)5NO2]2+ and [Fe(CO)5ONO]2+
D) [Fe(NH3)2(H2O)4]Cl2 and [Fe(NH3)2(H2O)4]Br2
E) [Cr(H2O)6]3+ and [Cr(NH3)6]3+
20) Which of the following compounds can exhibit cis-trans isomerism?
A) [Fe(CO)5NO2]2+
B) [Cu(CO)5Cl]+
C) [MnClBr3]2-
D) [Cr(H2O)6]3+
E) [Ni(CO)2(NH3)2]2+
21) Which of the following compounds can exhibit cis-trans isomerism?
A) [Cr(H2O)4Br2]+
B) [Cu(CO)5Br]+
C) [Fe(CO)3(NH3)3]3+
D) [Fe(CO)5ONO]2+
E) [Fe(NH3)6]2+
22) Which of the following compounds can exhibit fac-mer isomerism?
A) [Cu(CO)5Cl]+
B) [Co(H2O)3(CO)3]3+
C) [Fe(CO)5NO2]2+
D) [Fe(NH3)2(H2O)4]2+
E) [Cr(H2O)4Br2]+
23) Which of the following compounds can exhibit fac-mer isomerism?
A) [Cr(H2O)4Br2]+
B) [Fe(CO)5ONO]2+
C) [Fe(CO)3(NH3)3]3+
D) [Cu(CO)5Br]+
E) [Fe(NH3)4(H2O)2]2+
6
24) Which of the following complex ions absorbs light of the longest wavelength?
A) [Cr(CN)6]3-
B) [CrCl6]3-
C) [Cr(en)3]3+
D) [Cr(NH3)6]3+
E) [Cr(NO2)6]3-
25) Which of the following complex ions absorbs light of the shortest wavelength?
A) [FeCl6]3-
B) [Fe(OH)6]3-
C) [Fe(CN)6]3-
D) [Fe(H2O)6]3+
E) [FeI6]3-
26) The complex ion, [Ni(NH3)6]2+, has a maximum absorption near 580 nm. Calculate the crystal
field splitting energy (in kJ/mol) for this ion.
A) 114 kJ/mol
B) 292 kJ/mol
C) 343 kJ/mol
D) 206 kJ/mol
E) 485 kJ/mol
27) How many unpaired electrons would you expect for the complex ion: [Co(OH)6]3-?
A) 1
B) 2
C) 4
D) 0
E) 3
28) How many unpaired electrons would you expect for the complex ion: [Fe(NH3)6]2+?
A) 5
B) 2
C) 6
D) 4
E) 0
29) How many unpaired electrons would you expect for the complex ion: [Cr(CN)6]4-?
A) 0
B) 5
C) 3
D) 1
E) 2
30) How many unpaired electrons would you expect for the complex ion: [FeCl6]4-?
A) 2
B) 6
C) 4
D) 3
E) 0
31) Identify the shape of the hemoglobin complex.
A) octahedral
B) tetrahedral
C) pentadral
D) hexadral
E) heptadral
32) Identify the transition metal that is the coordinated metal in chlorophyll.
A) magnesium
B) manganese
C) selenium
D) iron
E) silver
8
Algorithmic Questions
1) What is the highest possible oxidation state for manganese?
A) +2
B) +5
C) +6
D) +7
2) Choose the electron configuration for Nb3+.
A) [Kr]5s24d2
B) [Kr]5s2
C) [Kr]4d2
D) [Ar]4s23d104p6
E) [Kr]5s24d4
3) Choose the electron configuration for Ru7+.
A) [Kr]5s14d3
B) [Kr]5s24d2
C) [Kr]5s24d1
D) [Kr]4d3
E) [Kr]5s24d6
4) Choose the electron configuration for Cr3+.
A) [Ne]3s23p6
B) [Ar]4s13d2
C) [Ar]4s23d1
D) [Ar]4s23d7
E) [Ar]3d3
5) Choose the electron configuration for V3+.
A) [Ar]3d2
B) [Ar]4s23d2
C) [Ar]4s23d4
D) [Ar]4s2
E) [Ne]3s23p6
6) What is the ground-state electron configuration for the element chromium (Z = 24)?
A) [Ne] 4s2 3d4
B) [Ar] 4s2 3d4
C) [Ar] 4s1 3d5
D) [Ar] 3d6
7) What is the ground-state electron configuration for Cr3+ (Z = 24)?
A) [Ar] 4s2 3d7
B) [Ar] 4s2 3d1
C) [Ar] 3d3
D) [Ar] 4s1 3d2
8) Which of the following species has the electron configuration [Ar]3d6?
A) Cr
B) Fe3+
C) Co3+
D) Ni3+
9) How many d electrons are there in W O42-?
A) 0
B) 1
C) 2
D) 3
10) Which of the following can function as a bidentate ligand?
A) CO
B) OH -
C) N H3
D) C2O4 2-
11) Which of the following can function as a chelating agent?
A) SH-
B) H2O
C) H2NCH2CO2-
D) SCN -
10
12) Choose the bidentate ligand from the substances below.
A) ethylenediamine
B) EDTA
C) chloride ion
D) ammonia
E) carbon monoxide
13) Choose the polydentate ligand from the substances below.
A) oxalate ion
B) EDTA
C) nitrite ion
D) hydroxide ion
E) carbon monoxide
14) Identify the geometry of [PdI4]2-.
A) tetrahedral
B) square planar
C) linear
D) octahedral
E) trigonal planar
15) Identify the geometry of [Ag(NH3)2]+.
A) tetrahedral
B) square planar
C) linear
D) bent
E) trigonal pyramidal
16) Identify the geometry of [Fe(H2O)6]3+.
A) tetrahedral
B) square planar
C) linear
D) octahedral
E) trigonal planar
17) How many moles of aqueous ions will be produced from the dissolution of 1.0 mole of K3[Fe(I)6]
in water?
A) 4
B) 10
C) 2
D) 9
E) 1
18) Which ion would you expect to have the largest crystal field splitting Δ?
A) [Rh(CN)6]4-
B) [Rh(CN)6]3-
C) [Rh(H2O)6]2+
D) [Rh(H2O)6]3+
19) Which of the following species is diamagnetic?
A) an isolated, gas-phase Cr3+ ion
B) a high-spin octahedral Cr2+ complex
C) an isolated, gas-phase Cu2+ ion
D) a low-spin octahedral Co3+ complex
20) What type of hybridization (according to valence bond theory) does Fe exhibit in the complex ion,
[Fe(H2O)4(Br)2]+?
A) dsp3
B) sp3
C) d2sp2
D) d2sp3
E) d2sp
21) What type of geometry (according to valence bond theory) does Fe exhibit in the complex ion,
[Fe(H2O)4(Cl)2]+?
A) linear
B) trigonal planar
C) square planar
D) octahedral
E) tetrahedral
22) What type of hybridization (according to valence bond theory) does Pt exhibit in the complex ion,
[Pt(NH3)4]2+?
A) dsp3
B) sp
C) d2sp3
D) d2sp
E) dsp2
23) What type of geometry (according to valence bond theory) does Pt exhibit in the complex ion,
[Pt(NH3)4]2+?
A) square pyramidal
B) see-saw
C) trigonal planar
D) tetrahedral
E) square planar
Diff: 3 Page Ref: 24.5
24) How many unpaired electrons would you expect for the complex ion: [Co(NH3 )6]4+?
A) 1
B) 0
C) 5
D) 2
E) 3
25) Identify the transition metal that is used in oxygen transport in the human body.
A) chromium
B) iron
C) sodium
D) copper
E) silver
26) Identify the transition metal that is used in hemoglobin synthesis in the human body.
A) potassium
B) zinc
C) copper
D) manganese
E) chromium
27) Identify the transition metal that is used infat and carbohydrate synthesis in the human body.
A) potassium
B) zinc
C) copper
D) manganese
E) chromium
Matching Questions
Match the following.
A) [Cr(NH3)3(CO)3]3+
B) [Ni(CN)2(OH)2]2-
C) [Zn(NH3)2Cl2]Br2 and [Zn(NH3)2Br2]Cl2
D) [Cu(SCN)4]3- and [Cu(NCS)4]3-
E) [Cr(en)3]3+
1) linkage
Diff: 2 Page Ref: 24.4
2) coordination
Diff: 2 Page Ref: 24.4
3) cis-trans
Diff: 2 Page Ref: 24.4
4) mer-fac
Diff: 2 Page Ref: 24.4
5) optical
Diff: 2 Page Ref: 24.4
Short Answer Questions
1) What is the Lanthanide contraction?
2) Why is +2 a common oxidation state for transition elements?
3) What is a coordinate covalent bond?
4) What is the difference between a weak-field complex and a strong-field complex?
5) Explain how EDTA is used to treat lead poisoning.
