Question 1

-Which element indicated on the above periodic table has the electron configuration [Ar] 3d10 4s1?

Accepted Answer

A) element A 
B) element B 
C) element C 
D) element D 
A) element A 
B) element B 
C) element C 
D) element D

Question 2

Platinum uses ________ hybrid orbitals to accept electron pairs from ligands in cis-Pt(NH3)2Cl2.

Accepted Answer

Question 3

How many electrons are in the ground state of Tl+?

Accepted Answer

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

Question 4

Vanadium in the +5 oxidation is most often found as compounds of

Accepted Answer

A) bromides. 
B) chlorides. 
C) oxides. 
D) phosphides. 
A) bromides. 
B) chlorides. 
C) oxides. 
D) phosphides.

Question 5

The third transition series metals are shown below.  
-Which has the lowest density?

Accepted Answer

A) La 
B) W 
C) Os 
D) Hg 
A) La 
B) W 
C) Os 
D) Hg

Question 6

Which of the following ions has the greater effective nuclear charge?

Accepted Answer

A) V3+ 
B) Cr3+ 
C) Fe3+ 
D) Co3+ 
A) V3+ 
B) Cr3+ 
C) Fe3+ 
D) Co3+

Question 7

Consider the following isomers of [Co(NHS1U1B13S1U1B0)S1U1B14S1U1B0BrS1U1B12S1U1B0]S1U1P1+S1S1P0.The black sphere represents Co,gray spheres represent NHS1U1B13S1U1B0,and unshaded spheres represent Br.  
-Which are cis-isomers?

Accepted Answer

A) isomers (1)and (2) 
B) isomers (1)and (3) 
C) isomers (2)and (4) 
D) isomers (3)and (4) 
A) isomers (1)and (2) 
B) isomers (1)and (3) 
C) isomers (2)and (4) 
D) isomers (3)and (4)

Question 8

What is the expected order for increasing octahedral (Δ0)crystal field splitting for ligands?

Accepted Answer

A) halides - 
B) halides - - - < halides 
A) halides - 
B) halides - - - < halides

Question 9

The coordination number of chromium in [Cr(EDTA)]- is ________.

Accepted Answer

Question 10

Cr2+ has ________ d electrons.

Accepted Answer

Question 11

Which of the following is a stronger acid?

Accepted Answer

A) Cr3+ 
B) Cr(OH)2 
C) Cr(OH)3 
D) CrO2(OH)2 
A) Cr3+ 
B) Cr(OH)2 
C) Cr(OH)3 
D) CrO2(OH)2

Question 12

What oxidation state(s)is(are)exhibited by all first row transition elements except scandium?

Accepted Answer

A) +2 
B) +3 
C) +2 and +3 
D) +2,+3 and +4 
A) +2 
B) +3 
C) +2 and +3 
D) +2,+3 and +4

Question 13

The second transition series metals are shown below.  
-Which has the greatest density?

Accepted Answer

A) Y 
B) Mo 
C) Rh 
D) Cd 
A) Y 
B) Mo 
C) Rh 
D) Cd

Question 14

[Co(NH3)5NCS]2+ and [Co(NH3)5SCN]2+ are examples of ________ isomers.

Accepted Answer

Question 15

What two transition elements have the highest electrical conductivity of any elements at room temperature?

Accepted Answer

A) copper and zinc 
B) copper and silver 
C) iron and gold 
D) silver and chromium 
A) copper and zinc 
B) copper and silver 
C) iron and gold 
D) silver and chromium

Question 16

How many d electrons are there in Cr O42-?

Accepted Answer

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

Question 17

What is the oxidation state of the Cr atom in [Ni(en)3]3[Cr(CN)6]2?

Accepted Answer

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

Question 18

The first transition series metals are shown below.  
-Which has the lowest melting point?

Accepted Answer

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

Question 19

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 20

What is the strongest oxidizing agent of the following set: FeO,Fe2O3,Fe3O4,FeO42-?

Accepted Answer

A) FeO 
B) Fe2O3 
C) Fe3O4 
D) FeO42- 
A) FeO 
B) Fe2O3 
C) Fe3O4 
D) FeO42-

Exam 20: Transition Elements and Coordination Chemistry

-Which element indicated on the above periodic table has the electron configuration [Ar] 3d10 4s1?

Platinum uses ________ hybrid orbitals to accept electron pairs from ligands in cis-Pt(NH3)2Cl2.

How many electrons are in the ground state of Tl+?

Vanadium in the +5 oxidation is most often found as compounds of

The third transition series metals are shown below. -Which has the lowest density?

Which of the following ions has the greater effective nuclear charge?

Consider the following isomers of [Co(NH3)4Br2]+.The black sphere represents Co,gray spheres represent NH3,and unshaded spheres represent Br. -Which are cis-isomers?

What is the expected order for increasing octahedral (Δ0)crystal field splitting for ligands?

The coordination number of chromium in [Cr(EDTA)]- is ________.

Cr2+ has ________ d electrons.

Which of the following is a stronger acid?

What oxidation state(s)is(are)exhibited by all first row transition elements except scandium?

The second transition series metals are shown below. -Which has the greatest density?

[Co(NH3)5NCS]2+ and [Co(NH3)5SCN]2+ are examples of ________ isomers.

What two transition elements have the highest electrical conductivity of any elements at room temperature?

How many d electrons are there in Cr O42-?

What is the oxidation state of the Cr atom in [Ni(en)3]3[Cr(CN)6]2?

The first transition series metals are shown below. -Which has the lowest melting point?

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 strongest oxidizing agent of the following set: FeO,Fe2O3,Fe3O4,FeO42-?

Chemical Tools: Experimentation and Measurement

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories 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

Nuclear Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

-Which element indicated on the above periodic table has the electron configuration [Ar] 3d¹⁰ 4s¹?

Platinum uses ________ hybrid orbitals to accept electron pairs from ligands in cis-Pt(NH₃)₂Cl₂.

How many electrons are in the ground state of Tl⁺?

Consider the following isomers of [Co(NH₃)₄Br₂]⁺.The black sphere represents Co,gray spheres represent NH₃,and unshaded spheres represent Br. -Which are cis-isomers?

What is the expected order for increasing octahedral (Δ₀)crystal field splitting for ligands?

The coordination number of chromium in [Cr(EDTA)]^- is ________.

Cr²⁺ has ________ d electrons.

[Co(NH₃)₅NCS]²⁺ and [Co(NH₃)₅SCN]²⁺ are examples of ________ isomers.

How many d electrons are there in CrO₄^2-?

What is the oxidation state of the Cr atom in [Ni(en)₃]₃[Cr(CN)₆]₂?

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 is the strongest oxidizing agent of the following set: FeO,Fe₂O₃,Fe₃O₄,FeO₄^2-?