Question 1

The oxidation state of chromium in Cr2O72- is ________.

Accepted Answer

Question 2

-Which of the above are ligands that contain two or more donor atoms?

Accepted Answer

A) All contain two or more donor atoms. 
B) (a)and (b) 
C) (c)and (d) 
D) None contain two or more donor atoms. 
A) All contain two or more donor atoms. 
B) (a)and (b) 
C) (c)and (d) 
D) None contain two or more donor atoms.

Question 3

Which complex is optically active?

Accepted Answer

A) [CoCl4en]2- 
B) trans-[CrCl2(en)2]+ 
C) cis-[CrCl2(en)2]+ 
D) [PtCl2(NH3)2] 
A) [CoCl4en]2- 
B) trans-[CrCl2(en)2]+ 
C) cis-[CrCl2(en)2]+ 
D) [PtCl2(NH3)2]

Question 4

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

Accepted Answer

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

Question 5

Polydentate ligands are known as ________ agents.

Accepted Answer

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

Question 6

Which of the following ions should be the strongest reducing agent?

Accepted Answer

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

Question 7

-Which is the most common ion formed by element D on the above periodic table?

Accepted Answer

A) B+ 
B) B2+ 
C) B3+ 
D) B7+ 
A) B+ 
B) B2+ 
C) B3+ 
D) B7+

Question 8

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 9

Which chromium species exists only under acidic conditions?

Accepted Answer

A) Cr(OH)2 
B) Cr(OH)4- 
C) CrO42- 
D) Cr2O72- 
A) Cr(OH)2 
B) Cr(OH)4- 
C) CrO42- 
D) Cr2O72-

Question 10

How many d electrons are there in MnO4-?

Accepted Answer

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

Question 11

In which blocks of the periodic table are the transition series and inner transition series elements found?

Accepted Answer

A) d,p 
B) d,f 
C) s,d 
D) s,p 
A) d,p 
B) d,f 
C) s,d 
D) s,p

Question 12

Which one of the following complexes is considered to be tetrahedral?

Accepted Answer

A) [FeF4]- 
B) [Ni(CN)4]2- 
C) [PtF4]2- 
D) [PdI2(NH3)2] 
A) [FeF4]- 
B) [Ni(CN)4]2- 
C) [PtF4]2- 
D) [PdI2(NH3)2]

Question 13

Which one of the following compounds is not consistent with the terminology of a complex?

Accepted Answer

A) [Cu(NH3)3]2+ 
B) BaSO4 ∙ 5H2O 
C) Na3[Fe(CN)6] 
D) [Cr(NH3)6]F3 
A) [Cu(NH3)3]2+ 
B) BaSO4 ∙ 5H2O 
C) Na3[Fe(CN)6] 
D) [Cr(NH3)6]F3

Question 14

Which is a third transition series element?

Accepted Answer

A) B 
B) Mg 
C) Y 
D) Ta 
A) B 
B) Mg 
C) Y 
D) Ta

Question 15

-Using the above schematic of an artist's color wheel,determine the color seen if a substance absorbs yellow and blue light.

Accepted Answer

A) green 
B) orange 
C) red 
D) violet 
A) green 
B) orange 
C) red 
D) violet

Question 16

What is the highest possible oxidation state for chromium?

Accepted Answer

A) +2 
B) +4 
C) +7 
D) +6 
A) +2 
B) +4 
C) +7 
D) +6

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

Question 19

Using the following reduction potentials for copper determine the unstable copper compound. Cu+(aq)+ e- → Cu(s)E° = +0.52 V
Cu2+(aq)+ e- → Cu+(aq)E° = +0.15 V

Accepted Answer

A) CuCl 
B) CuCl2 
C) CuSO4 
D) Cu(OH)2 
A) CuCl 
B) CuCl2 
C) CuSO4 
D) Cu(OH)2

Question 20

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

Accepted Answer

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

Exam 20: Transition Elements and Coordination Chemistry

The oxidation state of chromium in Cr2O72- is ________.

-Which of the above are ligands that contain two or more donor atoms?

Which complex is optically active?

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

Polydentate ligands are known as ________ agents.

Which of the following ions should be the strongest reducing agent?

-Which is the most common ion formed by element D on the above periodic table?

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

Which chromium species exists only under acidic conditions?

How many d electrons are there in MnO4-?

In which blocks of the periodic table are the transition series and inner transition series elements found?

Which one of the following complexes is considered to be tetrahedral?

Which one of the following compounds is not consistent with the terminology of a complex?

Which is a third transition series element?

-Using the above schematic of an artist's color wheel,determine the color seen if a substance absorbs yellow and blue light.

What is the highest possible oxidation state for chromium?

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

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

Using the following reduction potentials for copper determine the unstable copper compound. Cu+(aq)+ e- → Cu(s)E° = +0.52 V Cu2+(aq)+ e- → Cu+(aq)E° = +0.15 V

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

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Filters

The oxidation state of chromium in Cr₂O₇^2- is ________.

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

How many d electrons are there in MnO₄^-?

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

Using the following reduction potentials for copper determine the unstable copper compound. Cu⁺(aq)+ e^- → Cu(s)E° = +0.52 V Cu²⁺(aq)+ e^- → Cu⁺(aq)E° = +0.15 V