Question 1

What is the coordination number of iron in K3[Fe(ox)3]?
Ox =

Accepted Answer

A) 6 
B) 3 
C) 4 
D) 5 
E) 2 
A) 6 
B) 3 
C) 4 
D) 5 
E) 2

Question 2

What is the principal ore of chromium?

Accepted Answer

A) chromite 
B) chromate 
C) chrome alum 
D) stibnite 
E) hematite 
A) chromite 
B) chromate 
C) chrome alum 
D) stibnite 
E) hematite

Question 3

The formula for a platinum(IV)complex is [Pt(NH3)2Br2]Cl2.In aqueous solution,it will dissociate into

Accepted Answer

A) 5 ions. 
B) 4 ions. 
C) 6 ions. 
D) 2 ions. 
E) 3 ions. 
A) 5 ions. 
B) 4 ions. 
C) 6 ions. 
D) 2 ions. 
E) 3 ions.

Question 4

The octahedral complex hexacyanoferrate(III)ion,[Fe(CN)6]3-,is a low-spin complex.How many unpaired electrons does the complex have?

Accepted Answer

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

Question 5

Which of the following complexes can exhibit optical isomerism? (en = H2N-CH2-CH2-NH2 and is bidentate)

Accepted Answer

A) Co(NH3)3Cl3 
B) cis-Co(en)2Cl2 
C) trans-Co(en)2Br2 
D) cis-Co(NH3)4Cl2 
E) none of these 
A) Co(NH3)3Cl3 
B) cis-Co(en)2Cl2 
C) trans-Co(en)2Br2 
D) cis-Co(NH3)4Cl2 
E) none of these

Question 6

If an octahedral iron(II)complex is paramagnetic,which of the following sets of conditions best describes the complex?

Accepted Answer

A) low spin,Δ small 
B) low spin,Δ large 
C) high spin,Δ small 
D) high spin,Δ large 
E) none of the above 
A) low spin,Δ small 
B) low spin,Δ large 
C) high spin,Δ small 
D) high spin,Δ large 
E) none of the above

Question 7

What is the formula for the hexaaquavanadium(II)ion?

Accepted Answer

A) [V(H2O)6]2+ 
B) [V(H2O)4]2+ 
C) [V2(H2O)6]4- 
D) [V2(H2O)6]2+ 
E) [V2(H2O)6]4+ 
A) [V(H2O)6]2+ 
B) [V(H2O)4]2+ 
C) [V2(H2O)6]4- 
D) [V2(H2O)6]2+ 
E) [V2(H2O)6]4+

Question 8

What is the correct IUPAC name for [AuCl4(H2O)2]-?

Accepted Answer

A) diaquatetrachloroaurate(I)ion 
B) diaquatetrachloroaurate(III)ion 
C) diaquatetrachloroaurate(0)ion 
D) diaquatetrachlorogold(III)ion 
E) diaquatetrachlorogold(I)ion 
A) diaquatetrachloroaurate(I)ion 
B) diaquatetrachloroaurate(III)ion 
C) diaquatetrachloroaurate(0)ion 
D) diaquatetrachlorogold(III)ion 
E) diaquatetrachlorogold(I)ion

Question 9

In which of the following ions does the metal ion have a 3d7 electron configuration?

Accepted Answer

A) [NiCl4]2- 
B) [Mn(H2O)6]2+ 
C) [CoCl4]2- 
D) [Co(NH3)5Cl]2+ 
E) [Co(NH3)4Cl2]+ 
A) [NiCl4]2- 
B) [Mn(H2O)6]2+ 
C) [CoCl4]2- 
D) [Co(NH3)5Cl]2+ 
E) [Co(NH3)4Cl2]+

Question 10

The freezing point of an aqueous 0.050 m solution of a platinum(IV)complex having the molecular formula Pt(NH3)3Cl4 is -0.19°C.Which of the following equations best represents what happens when Pt(NH3)3Cl4 dissociates in water? (Kf for water is 1.86°C/m.)

Accepted Answer

A) Pt(NH3)3Cl4(s)→ [Pt(NH3)3Cl2]2+(aq)+ 2Cl-(aq) 
B) Pt(NH3)3Cl4(s)→ [Pt(NH3)3Cl3]+(aq)+ Cl-(aq) 
C) Pt(NH3)3Cl4(s)→ [Pt(NH3)3Cl]3+(aq)+ 3Cl-(aq) 
D) Pt(NH3)3Cl4(s)→ [Pt(NH3)2Cl2]2+(aq)+ 2Cl-(aq)+ NH3(aq) 
E) Pt(NH3)3Cl4(s)→ Pt4+(aq)+ 4Cl-(aq)+ 3NH3(aq) 
A) Pt(NH3)3Cl4(s)→ [Pt(NH3)3Cl2]2+(aq)+ 2Cl-(aq) 
B) Pt(NH3)3Cl4(s)→ [Pt(NH3)3Cl3]+(aq)+ Cl-(aq) 
C) Pt(NH3)3Cl4(s)→ [Pt(NH3)3Cl]3+(aq)+ 3Cl-(aq) 
D) Pt(NH3)3Cl4(s)→ [Pt(NH3)2Cl2]2+(aq)+ 2Cl-(aq)+ NH3(aq) 
E) Pt(NH3)3Cl4(s)→ Pt4+(aq)+ 4Cl-(aq)+ 3NH3(aq)

Question 11

Which of the following compounds can exhibit optical activity?

Accepted Answer

A) [Co(NH3)4Cl2]Cl 
B) [Co(NH2CH2CH2NH2)3]Cl3 
C) Na2[CoCl4] 
D) [Co(NH3)6]Cl3 
E) Cr(CO)6 
A) [Co(NH3)4Cl2]Cl 
B) [Co(NH2CH2CH2NH2)3]Cl3 
C) Na2[CoCl4] 
D) [Co(NH3)6]Cl3 
E) Cr(CO)6

Question 12

How many geometric isomers are possible for the square planar complex [Pt(NH3)2BrCl]?

Accepted Answer

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

Question 13

Which of the following statements is incorrect concerning the 3d,4d,and 5d transition series?

Accepted Answer

A) There is a large increase in radius in going from the 3d to the 4d metals. 
B) There is a general increase in size going left to right across each series due to an increasing number of electrons. 
C) Hafnium through mercury exhibit what is referred to as the lanthanide contraction. 
D) The separation of hafnium and zirconium found together in nature is difficult due to their similar chemistries,which are attributed to their virtually identical sizes. 
E) The transition metal from a period 6 group is similar in size to the peroid 5 transition metal sitting above it on the periodic table. 
A) There is a large increase in radius in going from the 3d to the 4d metals. 
B) There is a general increase in size going left to right across each series due to an increasing number of electrons. 
C) Hafnium through mercury exhibit what is referred to as the lanthanide contraction. 
D) The separation of hafnium and zirconium found together in nature is difficult due to their similar chemistries,which are attributed to their virtually identical sizes. 
E) The transition metal from a period 6 group is similar in size to the peroid 5 transition metal sitting above it on the periodic table.

Question 14

Which of the following liquids could best act as a bidentate ligand for a metal ion?

Accepted Answer

A) NH2Cl 
B) NH3 
C) ClCH2CH2NH2 
D) N2H5+ 
E) H2NCH2CH2NH2 
A) NH2Cl 
B) NH3 
C) ClCH2CH2NH2 
D) N2H5+ 
E) H2NCH2CH2NH2

Question 15

In which of the following compounds is the metal atom not in a common oxidation state?

Accepted Answer

A) CrOCl2 
B) NiF2 
C) CuI 
D) Zn(NO3)2 
E) MnSO4 
A) CrOCl2 
B) NiF2 
C) CuI 
D) Zn(NO3)2 
E) MnSO4

Question 16

Which of the following salts would not be expected to be colored in aqueous solution?

Accepted Answer

A) CrF3 
B) NiF2 
C) TiF3 
D) ScF3 
E) MnF3 
A) CrF3 
B) NiF2 
C) TiF3 
D) ScF3 
E) MnF3

Question 17

Transition metals can be distinguished from main-group metals by the fact that

Accepted Answer

A) main-group metals have only +1 or +2 oxidation states. 
B) transition metals have higher relative atomic weights than main-group metals. 
C) transition metals have a greater tendency to form colored compounds than main-group metals. 
D) main-group metals have higher relative atomic weights than transition metals. 
E) only the main-group metals can form complex ions. 
A) main-group metals have only +1 or +2 oxidation states. 
B) transition metals have higher relative atomic weights than main-group metals. 
C) transition metals have a greater tendency to form colored compounds than main-group metals. 
D) main-group metals have higher relative atomic weights than transition metals. 
E) only the main-group metals can form complex ions.

Question 18

In which of these pairs of elements can both elements normally exhibit multiple oxidation states?

Accepted Answer

A) K and O 
B) Cs and Cl 
C) Mg and Se 
D) Co and Cu 
E) Sc and Al 
A) K and O 
B) Cs and Cl 
C) Mg and Se 
D) Co and Cu 
E) Sc and Al

Question 19

What is the total number of geometric isomers possible for the octahedral complex [Co(NH3)3(H2O)3]?

Accepted Answer

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

Question 20

Ti has __________ in its d orbitals.

Accepted Answer

A) 1 electron 
B) 2 electrons 
C) 3 electrons 
D) 4 electrons 
E) none of these 
A) 1 electron 
B) 2 electrons 
C) 3 electrons 
D) 4 electrons 
E) none of these

Exam 22: The Transition Elements and Coordination Compounds

What is the coordination number of iron in K3[Fe(ox)3]? Ox =

What is the principal ore of chromium?

The formula for a platinum(IV)complex is [Pt(NH3)2Br2]Cl2.In aqueous solution,it will dissociate into

The octahedral complex hexacyanoferrate(III)ion,[Fe(CN)6]3-,is a low-spin complex.How many unpaired electrons does the complex have?

Which of the following complexes can exhibit optical isomerism? (en = H2N-CH2-CH2-NH2 and is bidentate)

If an octahedral iron(II)complex is paramagnetic,which of the following sets of conditions best describes the complex?

What is the formula for the hexaaquavanadium(II)ion?

What is the correct IUPAC name for [AuCl4(H2O)2]-?

In which of the following ions does the metal ion have a 3d7 electron configuration?

The freezing point of an aqueous 0.050 m solution of a platinum(IV)complex having the molecular formula Pt(NH3)3Cl4 is -0.19°C.Which of the following equations best represents what happens when Pt(NH3)3Cl4 dissociates in water? (Kf for water is 1.86°C/m.)

Which of the following compounds can exhibit optical activity?

How many geometric isomers are possible for the square planar complex [Pt(NH3)2BrCl]?

Which of the following statements is incorrect concerning the 3d,4d,and 5d transition series?

Which of the following liquids could best act as a bidentate ligand for a metal ion?

In which of the following compounds is the metal atom not in a common oxidation state?

Which of the following salts would not be expected to be colored in aqueous solution?

Transition metals can be distinguished from main-group metals by the fact that

In which of these pairs of elements can both elements normally exhibit multiple oxidation states?

What is the total number of geometric isomers possible for the octahedral complex [Co(NH3)3(H2O)3]?

Ti has __________ in its d orbitals.

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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

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Chemical Equilibrium

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Solubility and Complex-Ion Equilibria

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Filters

What is the coordination number of iron in K₃[Fe(ox)₃]? Ox =

The formula for a platinum(IV)complex is [Pt(NH₃)₂Br₂]Cl₂.In aqueous solution,it will dissociate into

The octahedral complex hexacyanoferrate(III)ion,[Fe(CN)₆]^3-,is a low-spin complex.How many unpaired electrons does the complex have?

Which of the following complexes can exhibit optical isomerism? (en = H₂N-CH₂-CH₂-NH₂ and is bidentate)

What is the correct IUPAC name for [AuCl₄(H₂O)₂]^-?

In which of the following ions does the metal ion have a 3d⁷ electron configuration?

The freezing point of an aqueous 0.050 m solution of a platinum(IV)complex having the molecular formula Pt(NH₃)₃Cl₄ is -0.19°C.Which of the following equations best represents what happens when Pt(NH₃)₃Cl₄ dissociates in water? (K_f for water is 1.86°C/m.)

How many geometric isomers are possible for the square planar complex [Pt(NH₃)₂BrCl]?

What is the total number of geometric isomers possible for the octahedral complex [Co(NH₃)₃(H₂O)₃]?