Question 1

-Which element indicated on the above periodic table has the electron configuration [Xe] 4f7 5d1 6s2?

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 D

Question 2

What is the correct formula for tetraamminecarbonatoiron(III)chloride?

Accepted Answer

A) (NH3)4[FeCO3]Cl 
B) [Fe(CO3)(NH3)4]Cl 
C) [Fe(CO3)(NH3)4]Cl2 
D) [Fe(CO3)Cl(NH3)4] 
A) (NH3)4[FeCO3]Cl 
B) [Fe(CO3)(NH3)4]Cl 
C) [Fe(CO3)(NH3)4]Cl2 
D) [Fe(CO3)Cl(NH3)4] B

Question 3

The number of unpaired electrons in square planar PtCl42- is ________.

Accepted Answer

0

Question 4

What statement is most inconsistent about the chemistry of iron?

Accepted Answer

A) Iron(III)hydroxide is very soluble and reacts readily with hydroxide to form Fe(OH)4-. 
B) Iron reacts with hydrochloric acid in the absence of air to yield iron(II)ion and hydrogen gas. 
C) Iron reacts with nitric acid to yield iron(III)ion and nitric oxide. 
D) The most common oxidation states of iron are +2 (ferrous)and +3 (ferric). 
A) Iron(III)hydroxide is very soluble and reacts readily with hydroxide to form Fe(OH)4-. 
B) Iron reacts with hydrochloric acid in the absence of air to yield iron(II)ion and hydrogen gas. 
C) Iron reacts with nitric acid to yield iron(III)ion and nitric oxide. 
D) The most common oxidation states of iron are +2 (ferrous)and +3 (ferric).

Question 5

The third transition series metals are shown below.  
-Which has the highest melting point?

Accepted Answer

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

Question 6

What chemical equation represents the best method for obtaining pure chromium?

Accepted Answer

A) FeCr2O4(s)+ 4 C(s)+ heat → Fe(s)+ 2 Cr(s)+ 4 CO(g) 
B) Cr2O3(s)+ 2 Al(s)+ heat → 2 Cr(s)+ Al2O3(s) 
C) Cr2O3(s)+ 2 Fe(s)+ heat → Fe2O3(s)+ 2 Cr(s) 
D) Cr2+(aq)+ H2(g)→ Cr(s)+ 2 H+(aq) 
A) FeCr2O4(s)+ 4 C(s)+ heat → Fe(s)+ 2 Cr(s)+ 4 CO(g) 
B) Cr2O3(s)+ 2 Al(s)+ heat → 2 Cr(s)+ Al2O3(s) 
C) Cr2O3(s)+ 2 Fe(s)+ heat → Fe2O3(s)+ 2 Cr(s) 
D) Cr2+(aq)+ H2(g)→ Cr(s)+ 2 H+(aq)

Question 7

What is the ground-state electron configuration for the element chromium (Z = 24)?

Accepted Answer

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

Question 8

-Which element indicated on the above periodic table has the electron configuration [Kr] 4d5 5s2?

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 9

What is a representative orbital-filling diagram for the cobalt ion in the low spin complex of [Co(CN)6]3-?

Accepted Answer

A) (
A)  
B) (
B)  
C) (
C)  
D) (
D)  
A) (
A)  
B) (
B)  
C) (
C)  
D) (
D)

Question 10

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

Accepted Answer

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

Question 11

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

Accepted Answer

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

Question 12

What is the crystal field energy level diagram for the complex [Fe(H2O)6]3+?

Accepted Answer

A) (
A)  
B) (
B)  
C) (
C)  
D) (
D)  
A) (
A)  
B) (
B)  
C) (
C)  
D) (
D)

Question 13

What is the ground-state electron configuration for Fe2+ (Z = 26)?

Accepted Answer

A) [Ar] 4s2 3d8 
B) [Ar] 4s2 3d4 
C) [Ar] 3d6 
D) [Ar] 4s1 3d5 
A) [Ar] 4s2 3d8 
B) [Ar] 4s2 3d4 
C) [Ar] 3d6 
D) [Ar] 4s1 3d5

Question 14

What is the coordination number of the Fe atom in K3[Fe(C2O4)3]?

Accepted Answer

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

Question 15

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 structures are identical?

Accepted Answer

A) None of the structures are identical. 
B) structure (1)= structure (2)and structure (3)= structure (4) 
C) structure (1)= structure (3)and structure (2)= structure (4) 
D) structure (1)= structure (4)and structure (2)= structure (3) 
A) None of the structures are identical. 
B) structure (1)= structure (2)and structure (3)= structure (4) 
C) structure (1)= structure (3)and structure (2)= structure (4) 
D) structure (1)= structure (4)and structure (2)= structure (3)

Question 16

Describe what happens when 3.0 M NH3 is slowly added to an aqueous solution of CuSO4.

Accepted Answer

A) A blue precipitate of Cu(OH)2 forms. 
B) A royal blue complex of [Cu(NH3)4]2+ is formed. 
C) A blue precipitate of Cu(OH)2 is formed which is then converted to the royal blue complex [Cu(NH3)4]2+. 
D) A royal blue complex of [Cu(NH3)4]2+ is formed which then is converted to a blue precipitate of Cu(OH)2. 
A) A blue precipitate of Cu(OH)2 forms. 
B) A royal blue complex of [Cu(NH3)4]2+ is formed. 
C) A blue precipitate of Cu(OH)2 is formed which is then converted to the royal blue complex [Cu(NH3)4]2+. 
D) A royal blue complex of [Cu(NH3)4]2+ is formed which then is converted to a blue precipitate of Cu(OH)2.

Question 17

The first transition series metals are shown below.  
-Which has the largest atomic radius?

Accepted Answer

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

Question 18

Which is not a characteristic reaction of chromium metal or chromium(II)ion?

Accepted Answer

A) Cr(s)+ 2 H+(aq)→ Cr2+(aq)+ H2(g) 
B) 4 Cr2+(aq)+ O2(g)+ 4 H+(aq)→ 4 Cr3+(aq)+ 2 H2O(l) 
C) Cr(OH)2(s)+ 2 H3O+(aq)→ Cr2+(aq)+ 4 H2O(l) 
D) Cr(OH)2(s)+ OH-(aq)→ Cr(OH)3-(aq) 
A) Cr(s)+ 2 H+(aq)→ Cr2+(aq)+ H2(g) 
B) 4 Cr2+(aq)+ O2(g)+ 4 H+(aq)→ 4 Cr3+(aq)+ 2 H2O(l) 
C) Cr(OH)2(s)+ 2 H3O+(aq)→ Cr2+(aq)+ 4 H2O(l) 
D) Cr(OH)2(s)+ OH-(aq)→ Cr(OH)3-(aq)

Question 19

Which of the following species has the electron configuration [Ar]3d3?

Accepted Answer

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

Question 20

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

Exam 20: Transition Elements and Coordination Chemistry

-Which element indicated on the above periodic table has the electron configuration [Xe] 4f7 5d1 6s2?

What is the correct formula for tetraamminecarbonatoiron(III)chloride?

The number of unpaired electrons in square planar PtCl42- is ________.

What statement is most inconsistent about the chemistry of iron?

The third transition series metals are shown below. -Which has the highest melting point?

What chemical equation represents the best method for obtaining pure chromium?

What is the ground-state electron configuration for the element chromium (Z = 24)?

-Which element indicated on the above periodic table has the electron configuration [Kr] 4d5 5s2?

What is a representative orbital-filling diagram for the cobalt ion in the low spin complex of [Co(CN)6]3-?

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

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

What is the crystal field energy level diagram for the complex [Fe(H2O)6]3+?

What is the ground-state electron configuration for Fe2+ (Z = 26)?

What is the coordination number of the Fe atom in K3[Fe(C2O4)3]?

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

Describe what happens when 3.0 M NH3 is slowly added to an aqueous solution of CuSO4.

The first transition series metals are shown below. -Which has the largest atomic radius?

Which is not a characteristic reaction of chromium metal or chromium(II)ion?

Which of the following species has the electron configuration [Ar]3d3?

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

Chemical Tools: Experimentation and Measurement

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Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

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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 [Xe] 4f⁷ 5d¹ 6s²?

The number of unpaired electrons in square planar PtCl₄^2- is ________.

-Which element indicated on the above periodic table has the electron configuration [Kr] 4d⁵ 5s²?

What is a representative orbital-filling diagram for the cobalt ion in the low spin complex of [Co(CN)₆]^3-?

What is the crystal field energy level diagram for the complex [Fe(H₂O)₆]³⁺?

What is the ground-state electron configuration for Fe²⁺ (Z = 26)?

What is the coordination number of the Fe atom in K₃[Fe(C₂O₄)₃]?

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

Describe what happens when 3.0 M NH₃ is slowly added to an aqueous solution of CuSO₄.

Which of the following species has the electron configuration [Ar]3d³?

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