Deck 23: Transition Metals and Coordination Compounds

Question 1

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-

Answer 1

[Pt(CO)₄]Cl₄

Question 2

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.

Answer 2

linkage isomers

Question 3

Name the following: Fe[AlF₆]

A) ironaluminumhexafluoride
B) iron(II) hexafluoroaluminum
C) iron (III) hexafluoroaluminate
D) iron(I) aluminumhexafluoride
E) aluminumhexafluoroferrate

Answer 3

iron (III) hexafluoroaluminate

Question 4

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

Question 5

Choose the electron configuration for Fe³⁺.

A) [Ar]4s²3d³
B) [Ar]3d⁵
C) [Ar]4s²3d⁹
D) [Ar]4s¹3d⁴
E) [Ar]4s²3d⁶

Question 6

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

Question 7

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-

Question 8

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

Question 9

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

Question 10

Identify the ion that is responsible for the green color in emeralds.

A) Cr³⁺
B) Cr⁴⁺
C) Cr⁵⁺
D) Cr⁶⁺
E) Cr⁷⁺

Question 11

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

Question 12

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⁺

Question 13

Identify the ion that is responsible for the blue of turquoise.

A) Cr²⁺
B) Cu⁺
C) Cu²⁺
D) Cr³⁺
E) Fe²⁺

Question 14

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

Question 15

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

Question 16

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⁺

Question 17

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⁺

Question 18

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⁺

Question 19

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]

Question 20

Identify the ion that is responsible for the red color of rubies.

A) Cr³⁺
B) Cr⁴⁺
C) Cr⁵⁺
D) Cr⁶⁺
E) Cr⁷⁺

Question 21

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

Question 22

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

Question 23

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-

Question 24

How many unpaired electrons would you expect for the complex ion: [Co(NH₃)₆]³⁺?

A) 0
B) 1
C) 2
D) 3
E) 4

Question 25

Identify the shape of the hemoglobin complex.

A) octahedral
B) tetrahedral
C) pentadral
D) hexadral
E) heptadral

Question 26

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]⁺

Question 27

How many unpaired electrons would you expect for the complex ion: [Co(NO₂)₆]^3-?

A) 0
B) 1
C) 3
D) 4
E) 5

Question 28

The complex ion [Co(OH₂)₆](³⁺)is blue in an aqueous solution.Estimate the wavelength of maximum absorbance.

A) 200 nm
B) 300 nm
C) 400 nm
D) 600 nm
E) 800 nm

Question 29

The complex ion,[Cr(NH₃)₆]³⁺,has a maximum absorption of 463 nm.Calculate the crystal field splitting energy (in kJ/mol)for this ion.

A) 299 kJ/mol
B) 538 kJ/mol
C) 372 kJ/mol
D) 258 kJ/mol
E) 193kJ/mol

Question 30

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⁺

Question 31

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

Question 32

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

Question 33

The complex ion [Co(OH₂)₆](³⁺)is blue in an aqueous solution.Estimate the crystal field splitting energy (in kJ/mol)for this ion.

A) 199 kJ/mol
B) 282 kJ/mol
C) 328 kJ/mol
D) 127 kJ/mol
E) 302 kJ/mol

Question 34

Identify the transition metal that is the coordinated metal in chlorophyll.

A) magnesium
B) manganese
C) selenium
D) iron
E) silver

Question 35

How many unpaired electrons would you expect for the complex ion: [FeF₆]^3-?

A) 0
B) 1
C) 3
D) 4
E) 5

Question 36

What is the highest oxidation state possible for manganese?

A) +2
B) +3
C) +5
D) +7
E) +9

Question 37

Which of the following compounds can exhibit fac-mer isomerism?

A) [Fe(H₂O)₆]²⁺
B) [Al(H₂O)₃(OH)₃]
C) [Cu(NH₃)₄(H₂O)₂]⁺
D) [Co(H₂O)₄(OH)₂]
E) [Cr(NH₃)₆]³⁺

Question 38

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-

Question 39

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⁺

Question 40

How many unpaired electrons would you expect for the complex ion: [FeCl₆]^4-?

A) 2
B) 6
C) 4
D) 3
E) 0

Question 41

Choose the electron configuration for Mo⁵⁺.

A) [Kr]5s¹4d³
B) [Kr]5s²4d²
C) [Kr]5s²4d¹
D) [Kr]4d¹
E) [Kr]5s²4d⁶

Question 42

What is the highest possible oxidation state for vanadium?

A) + 2
B) + 3
C) + 4
D) + 5

Question 43

Identify the geometry of [Fe(H₂O)₆]³⁺.

A) tetrahedral
B) square pyramidal
C) linear
D) octahedral
E) trigonal planar

Question 44

What is the ground-state electron configuration for the element nickel (Z = 28)?

A) [Ne] 4s¹ 3d⁹
B) [Ar] 4s¹ 3d⁹
C) [Ar] 4s² 3d⁸
D) [Ar] 3d¹⁰

Question 45

Which of the following can function as a chelating agent?

A) SH^-
B) H₂O
C) H₂NCH₂CO₂^-
D) SCN ^-

Question 46

What type of hybridization (according to valence bond theory)does Fe exhibit in the complex ion,[Fe(H₂O)₄(Cl)₂]⁺?

A) dsp³
B) sp2
C) d²sp²
D) d²sp³
E) d²sp

Question 47

How many d electrons are there in Cr₂O₇^2-?

A) 0
B) 1
C) 2
D) 3

Question 48

Identify the geometry of [Ag(NH₃)₂]⁺.

A) tetrahedral
B) square planar
C) linear
D) bent
E) trigonal pyramidal

Question 49

What is the ground-state electron configuration for Ni²⁺ (Z = 28)?

A) [Ar] 4s² 3d¹⁰
B) [Ar] 4s² 3d⁶
C) [Ar] 3d⁸
D) [Ar] 4s¹ 3d⁷

Question 50

Which ion would you expect to have the largest crystal field splitting Δ?

A) [Co(CN)₆]^4-
B) [Co(CN)₆]^3-
C) [Co(H₂O)₆]²⁺
D) [Co(H₂O)₆]³⁺

Question 51

Choose the polydentate ligand from the substances below.

A) chloride ion
B) EDTA
C) nitrate ion
D) hydroxide ion
E) carbon monoxide

Question 52

Which of the following species has the electron configuration [Ar]3d⁶?

A) Cr
B) Fe³⁺
C) Co³⁺
D) Ni³⁺

Question 53

Which of the following can function as a bidentate ligand?

A) CO
B) NH₃
C) CH₃NH₂
D) H₂NCH₂CO₂ ^-

Question 54

Choose the electron configuration for Ti²⁺.

A) [Ar]3d²
B) [Ar]4s²3d²
C) [Ar]4s²3d⁴
D) [Ar]4s²
E) [Ne]3s²3p⁶

Question 55

Identify the geometry of [Pd I₄]^2-.

A) tetrahedral
B) square planar
C) linear
D) octahedral
E) trigonal planar

Question 56

Choose the bidentate ligand from the substances below.

A) oxalate ion
B) EDTA
C) cyanide ion
D) water
E) carbon monoxide

Question 57

How many moles of aqueous ions will be produced from the dissolution of 1.0 mole of K₃[Fe(Br)₆] in water?

A) 4
B) 10
C) 2
D) 9
E) 1

Question 58

Choose the electron configuration for Zr²⁺.

A) [Kr]5s²4d²
B) [Kr]5s²
C) [Kr]4d²
D) [Ar]4s²3d¹⁰4p⁶
E) [Kr]5s²4d⁴

Question 59

Choose the electron configuration for Mn⁴⁺.

A) [Ne]3s²3p⁶
B) [Ar]4s¹3d²
C) [Ar]4s²3d¹
D) [Ar]4s²3d⁷
E) [Ar]3d³

Question 60

Which of the following species is diamagnetic?

A) an isolated, gas-phase V³⁺ ion
B) a high-spin octahedral Fe²⁺ complex
C) an isolated, gas-phase Cu²⁺ ion
D) a low-spin octahedral Co³⁺ complex

Question 61

If a complex ion has a maximum absorption of 600 nm,what is the crystal field splitting energy (in kJ/mol)?

A) 200 kJ/mol
B) 284 kJ/mol
C) 314 kJ/mol
D) 384 kJ/mol
E) 413 kJ/mol

Question 62

Explain how EDTA is used to treat lead poisoning.

Question 63

If a complex ion has a crystal field splitting energy of 410 kJ/mol,what is its maximum absorption?

A) 425 nm
B) 353 nm
C) 292 nm
D) 231 nm
E) 193 nm

Question 64

Identify the transition metal that is used in hemoglobin synthesis in the human body.

A) lithium
B) iron
C) copper
D) manganese
E) chromium

Question 65

What is the Lanthanide contraction?

Question 66

Identify the transition metal that is used in fat and carbohydrate synthesis in the human body.

A) sodium
B) zinc
C) copper
D) manganese
E) chromium

Question 67

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) linear
E) square planar

Question 68

What is the difference between a weak-field complex and a strong-field complex?

Question 69

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

Question 70

What type of hybridization (according to valence bond theory)does Pt exhibit in the complex ion,[Pt(NH₃)₄]²⁺?

A) dsp³
B) sp³
C) d²sp³
D) d²sp
E) dsp²

Question 71

Identify the transition metal that is used in oxygen transport in the human body.

A) chromium
B) iron
C) potassium
D) copper
E) silver

Question 72

Why is +2 a common oxidation state for transition elements?

Question 73

How many unpaired electrons would you expect for the complex ion: [Mn(NH₃ )₆]²⁺?

A) 1
B) 0
C) 5
D) 2
E) 3

Question 74

What is a coordinate covalent bond?