Question 1

How many unpaired electrons will Co have in the complex [CoCl4]2-?

Accepted Answer

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

Question 2

Which of the following elements is an inner transition metal?

Accepted Answer

A) Eu 
B) Fe 
C) Ru 
D) Sc 
A) Eu 
B) Fe 
C) Ru 
D) Sc

Question 3

Which pair of isomers illustrates the concept of ionization isomers?

Accepted Answer

A) [Cr(SCN)(NH3)5]2+ and [Cr(NCS)(NH3)5]2+ 
B) [CoCl(NH3)5]SO4 and [Co(SO4)(NH3)5]Cl 
C) cis -[PtCl2(NH3)2] and trans -[PtCl2(NH3)2] 
D) (+)-[Co(en)3]3+ and (-)-[Co(en)3]3+ 
A) [Cr(SCN)(NH3)5]2+ and [Cr(NCS)(NH3)5]2+ 
B) [CoCl(NH3)5]SO4 and [Co(SO4)(NH3)5]Cl 
C) cis -[PtCl2(NH3)2] and trans -[PtCl2(NH3)2] 
D) (+)-[Co(en)3]3+ and (-)-[Co(en)3]3+

Question 4

The small sizes of third transition series atoms is referred to as the ________ contraction.

Accepted Answer

The answer of The small sizes of third transition series...

Question 5

What is the oxidation state of the Co atom in [Co(NH3)5Cl](NO3)2?

Accepted Answer

A) +2 
B) +3 
C) +4 
D) +6 
A) +2 
B) +3 
C) +4 
D) +6

Question 6

What is the ground-state electron configuration for Cr in Cr2O72-?

Accepted Answer

A) [Ar] 4s1 3d5 
B) [Ar] 4s2 3d6 
C) [Ar] 3d4 
D) [Ar] 3d0 
A) [Ar] 4s1 3d5 
B) [Ar] 4s2 3d6 
C) [Ar] 3d4 
D) [Ar] 3d0

Question 7

Polydentate ligands are known as ________ agents.

Accepted Answer

The answer of Polydentate ligands are known as ________ agents....

Question 8

What is the expected order for increasing octahedral (Δ0)crystal field splitting for the ligands I-,F-,H2O,NH3,en,CO?

Accepted Answer

A) I- - 2O 3 - - 3 2O 
C) I- - 2O 3 3 2O - - 
A) I- - 2O 3 - - 3 2O 
C) I- - 2O 3 3 2O - -

Question 9

Which of the following complexes has five unpaired electrons?

Accepted Answer

A) [Mn(H2O)6]2+ 
B) [Mn(CN)6]3- 
C) CrCl3(H2O)3 
D) [Ag(NH3)2]+ 
A) [Mn(H2O)6]2+ 
B) [Mn(CN)6]3- 
C) CrCl3(H2O)3 
D) [Ag(NH3)2]+

Question 10

For transition elements,which of the following occurs as the effective nuclear charge increases?

Accepted Answer

A) The atomic radius increases. 
B) The density increases. 
C) Both the atomic radius and the density increase. 
D) The atomic radius decreases and the density increases. 
A) The atomic radius increases. 
B) The density increases. 
C) Both the atomic radius and the density increase. 
D) The atomic radius decreases and the density increases.

Question 11

What statement is inconsistent with the chemistry of copper?

Accepted Answer

A) It has a high electrical conductivity and is widely used to make electrical wiring. 
B) It is commonly found in the elemental state. 
C) It is a reddish colored metal that accounts for only 0.0068% of the earth's crust by mass. 
D) It is used to make corrosion-resistant water pipes because it has a positive oxidation potential. 
A) It has a high electrical conductivity and is widely used to make electrical wiring. 
B) It is commonly found in the elemental state. 
C) It is a reddish colored metal that accounts for only 0.0068% of the earth's crust by mass. 
D) It is used to make corrosion-resistant water pipes because it has a positive oxidation potential.

Question 12

In the two half-reactions shown below,which chromium species is the strongest oxidizing agent?
Cr2O72-(aq)+ 14 H+(aq)+ 6 e- → 2 Cr3+(aq)+ 7 H2O(l)E° = + 1.33 V
CrO42-(aq)+ 4 H2O(l)+ 6 e- → Cr(OH)3(s)+ 5 OH-(aq)E° = - 0.13 V

Accepted Answer

A) Cr2O72- 
B) Cr3+ 
C) CrO42- 
D) Cr(OH)3 
A) Cr2O72- 
B) Cr3+ 
C) CrO42- 
D) Cr(OH)3

Question 13

What is the ground-state electron configuration for the element cobalt (Z = 27)?

Accepted Answer

A) [Ar] 4s2 3d7 
B) [Ar] 3d9 
C) [Ar] 4s2 4p6 5s1 
D) [Ar] 3d7 
A) [Ar] 4s2 3d7 
B) [Ar] 3d9 
C) [Ar] 4s2 4p6 5s1 
D) [Ar] 3d7

Question 14

The first transition series metals are shown below.  
-Which has the most negative standard oxidation potential?

Accepted Answer

A) Sc 
B) V 
C) Cu 
D) Zn 
A) Sc 
B) V 
C) Cu 
D) Zn

Question 15

What type of hybrid orbitals are used by the Ti atom to form chemical bonds in the complex ion [Ti(H2O)6]3+?

Accepted Answer

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

Question 16

What are two of the major components of stainless steel?

Accepted Answer

A) iron and carbon 
B) iron and chromium 
C) iron and titanium 
D) iron and tungsten 
A) iron and carbon 
B) iron and chromium 
C) iron and titanium 
D) iron and tungsten

Question 17

Which element is most likely to have an anomalous electron configuration?

Accepted Answer

A) Y 
B) Tc 
C) Ag 
D) Cd 
A) Y 
B) Tc 
C) Ag 
D) Cd

Question 18

Which transition element has the highest melting point?

Accepted Answer

A) Fe 
B) V 
C) Mo 
D) W 
A) Fe 
B) V 
C) Mo 
D) W

Question 19

The number of unpaired electrons in tetrahedral NiBr42- is ________.

Accepted Answer

Question 20

Which of the following species is diamagnetic?

Accepted Answer

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 
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

Exam 20: Transition Elements and Coordination Chemistry

How many unpaired electrons will Co have in the complex [CoCl4]2-?

Which of the following elements is an inner transition metal?

Which pair of isomers illustrates the concept of ionization isomers?

The small sizes of third transition series atoms is referred to as the ________ contraction.

What is the oxidation state of the Co atom in [Co(NH3)5Cl](NO3)2?

What is the ground-state electron configuration for Cr in Cr2O72-?

Polydentate ligands are known as ________ agents.

What is the expected order for increasing octahedral (Δ0)crystal field splitting for the ligands I-,F-,H2O,NH3,en,CO?

Which of the following complexes has five unpaired electrons?

For transition elements,which of the following occurs as the effective nuclear charge increases?

What statement is inconsistent with the chemistry of copper?

In the two half-reactions shown below,which chromium species is the strongest oxidizing agent? Cr2O72-(aq)+ 14 H+(aq)+ 6 e- → 2 Cr3+(aq)+ 7 H2O(l)E° = + 1.33 V CrO42-(aq)+ 4 H2O(l)+ 6 e- → Cr(OH)3(s)+ 5 OH-(aq)E° = - 0.13 V

What is the ground-state electron configuration for the element cobalt (Z = 27)?

The first transition series metals are shown below. -Which has the most negative standard oxidation potential?

What type of hybrid orbitals are used by the Ti atom to form chemical bonds in the complex ion [Ti(H2O)6]3+?

What are two of the major components of stainless steel?

Which element is most likely to have an anomalous electron configuration?

Which transition element has the highest melting point?

The number of unpaired electrons in tetrahedral NiBr42- is ________.

Which of the following species is diamagnetic?

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

How many unpaired electrons will Co have in the complex [CoCl₄]^2-?

What is the oxidation state of the Co atom in [Co(NH₃)₅Cl](NO₃)₂?

What is the ground-state electron configuration for Cr in Cr₂O₇^2-?

What is the expected order for increasing octahedral (Δ₀)crystal field splitting for the ligands I^-,F^-,H₂O,NH₃,en,CO?

In the two half-reactions shown below,which chromium species is the strongest oxidizing agent? Cr₂O₇^2-(aq)+ 14 H⁺(aq)+ 6 e^- → 2 Cr³⁺(aq)+ 7 H₂O(l)E° = + 1.33 V CrO₄^2-(aq)+ 4 H₂O(l)+ 6 e^- → Cr(OH)₃(s)+ 5 OH^-(aq)E° = - 0.13 V

What type of hybrid orbitals are used by the Ti atom to form chemical bonds in the complex ion [Ti(H₂O)₆]³⁺?

The number of unpaired electrons in tetrahedral NiBr₄^2- is ________.