Question 1

The most common oxidation state for ions of the inner transition elements is

Accepted Answer

A)   +2.
B)   +3.
C)   +4.
D)   +5.
E)   +7.F) C) and E)
G) A) and C)

Question 2

Give the systematic name for [CoCl3(H2O) ]-.

Accepted Answer

A)   cobalt(II)  chloride monohydrate
B)  aquatrichlorocobalt(II) 
C)  aquatrichlorocobaltate(II) 
D)  aquatrichlorocobaltite(I) 
E)  None of these choices are correct.F) All of the above
G) C) and E)

Question 3

The compound K3[Fe(CN) 6] is used in calico printing and wool dyeing. Give its systematic name.

Accepted Answer

A)   potassium iron(III)  hexacyanate
B)  tripotassium iron(III)  hexacyanate
C)  potassium hexacyanoferrate(III) 
D)  potassium hexacyanideferrate
E)  None of these choices are correct.F) B) and D)
G) All of the above

Question 4

If M represents a transition element, which of the following oxides should be the least basic?

Accepted Answer

A)   MO
B)  M2O
C)  M2O3
D)   MO2
E)   MO3F) D) and E)
G) A) and B)

Question 5

Which of the following ions could exist in only the high-spin state in an octahedral complex?

Accepted Answer

A)   Cr2+
B)   Mn4+
C)   Fe3+
D)   Co3+
E)   Ni2+F) A) and B)
G) A) and C)

Question 6

Which of the following will be the strongest oxidizing agent?

Accepted Answer

A)   Cr
B)   Cr(II) 
C)   Cr(III) 
D)   Cr(IV) 
E)   Cr(VI) F) D) and E)
G) B) and C)

Question 7

Which of the following is considered a bidentate ligand?

Accepted Answer

A)   cyanide, CN-
B)   thiocyanate, SCN- 
C)  oxalate, C2O42-
D)  nitrite, NO2-
E)   hydroxide, OH-F) A) and E)
G) A) and D)

Question 8

The permanganate ion (MnO4-) is a powerful reducing agent.

Accepted Answer

A) True 
 B)False

Question 9

Give the systematic name for Cr(CO) 3(NH3) 3.

Accepted Answer

A)   chromiumtriaminotricarbonyl
B)  triamminechromium carbonate
C)  triamminetricarbonylchromate(0) 
D)  triamminetricarbonylchromium(0) 
E)  None of these choices are correct.F) All of the above
G) D) and E)

Question 10

Which of the following ligands is most likely to form a low-spin octahedral complex with iron(III) ?

Accepted Answer

A)   Cl? 
B)   H2O
C)   NH3
D)   OH-
E)   COF) A) and E)
G) C) and E)

Question 11

According to valence bond theory, what would be the set of hybrid orbitals used when a Period 4 transition metal forms a tetrahedral complex?

Accepted Answer

A)  d2sp
B)  dsp2
C)  dsp3
D)  sp3
E)  d2p2F) A) and C)
G) A) and E)

Question 12

The conversion of the chromate ion (CrO42-) to the dichromate ion (Cr2O72-) is a redox process.

Accepted Answer

A) True 
 B)False

Question 13

Consider the following structures (1 and 2 are octahedral; 3 and 4 are square planar) .  Which one of the following statements about the above structures is correct?

Accepted Answer

A)   1 and 2 are superimposable.
B)  1 and 2 are geometric isomers.
C)  3 and 4 are structural isomers.
D)  3 and 4 are optical isomers.
E)  3 and 4 are geometric isomers.F) A) and B)
G) None of the above

Question 14

Which of the following will be paramagnetic?

Accepted Answer

A)   V5+
B)   Ni2+
C)   Mn7+
D)   Ti4+
E)   ZnF) A) and B)
G) B) and D)

Question 15

How many unpaired electrons will there be in a high-spin octahedral complex of Fe(II) ?

Accepted Answer

A)   0
B)   2
C)   4
D)   6
E)   None of these choices are correct.F) A) and B)
G) A) and C)

Question 16

A certain transition element has the stable oxidation states of +2, +3, +4, +5, and +6. In which state the element be most likely to form an ionic bond with chlorine?

Accepted Answer

A)   +2
B)   +3
C)   +4
D)   +5
E)   +6F) A) and D)
G) B) and D)

Question 17

Which of the following transition elements can achieve the largest oxidation number?

Accepted Answer

A)   chromium, Cr, Group 6B(6) 
B)  manganese, Mn, Group 7B(7) 
C)  iron, Fe, Group 8B(8) 
D)  cobalt, Co, Group 8B(9) 
E)  zinc, Zn, Group 2B(12) F) A) and B)
G) D) and E)

Question 18

The most common oxidation state for ions of the transition elements is

Accepted Answer

A)   +2.
B)   +3.
C)   +4.
D)   +5.
E)   +6.F) None of the above
G) A) and D)

Question 19

The crystal field splitting energy, Δ,

Accepted Answer

A)   is larger for tetrahedral complexes than for octahedral complexes.
B)   depends on the metal but not on the ligand.
C)   determines the color of a complex.
D)   is larger for ionic ligands like chloride than for molecular ligands like carbon monoxide, CO.
E)   determines the charge of a complex.F) B) and C)
G) A) and D)

Question 20

Which of the following complexes could have isomeric forms?

Accepted Answer

A)   [Pt(NH3) 3Cl]+
B)   [Fe(CN) 6]3+
C)   [Pt(NH3) Br3]+
D)   [Pt(en) Cl2]
E)   [Co(H2O) 4Cl2]+F) A) and E)
G) A) and D)

Exam 23: Transition Elements and Their Coordination Compounds

The most common oxidation state for ions of the inner transition elements is

Correct AnswerverifiedShow Answer

A certain transition element has the stable oxidation states of +2, +3, +4, +5, and +6. In which state the element be most likely to form an ionic bond with chlorine?

Correct AnswerverifiedShow Answer

Give the systematic name for [CoCl3(H2O) ]-.

Correct AnswerverifiedShow Answer

The compound K3[Fe(CN) 6] is used in calico printing and wool dyeing. Give its systematic name.

Correct AnswerverifiedShow Answer

How many unpaired electrons will there be in a high-spin octahedral complex of Fe(II) ?

Correct AnswerverifiedShow Answer

Consider the following structures (1 and 2 are octahedral; 3 and 4 are square planar) . Which one of the following statements about the above structures is correct?

Correct AnswerverifiedShow Answer

The most common oxidation state for ions of the transition elements is

Correct AnswerverifiedShow Answer

Which of the following transition elements can achieve the largest oxidation number?

Correct AnswerverifiedShow Answer

Which of the following will be paramagnetic?

Correct AnswerverifiedShow Answer

The conversion of the chromate ion (CrO42-) to the dichromate ion (Cr2O72-) is a redox process.

Correct AnswerverifiedShow Answer

Which of the following ligands is most likely to form a low-spin octahedral complex with iron(III) ?

Correct AnswerverifiedShow Answer

Which of the following is considered a bidentate ligand?

Correct AnswerverifiedShow Answer

Which of the following will be the strongest oxidizing agent?

Correct AnswerverifiedShow Answer

Give the systematic name for Cr(CO) 3(NH3) 3.

Correct AnswerverifiedShow Answer

If M represents a transition element, which of the following oxides should be the least basic?

Correct AnswerverifiedShow Answer

The crystal field splitting energy, Δ,

Correct AnswerverifiedShow Answer

According to valence bond theory, what would be the set of hybrid orbitals used when a Period 4 transition metal forms a tetrahedral complex?

Correct AnswerverifiedShow Answer

Which of the following ions could exist in only the high-spin state in an octahedral complex?

Correct AnswerverifiedShow Answer

The permanganate ion (MnO4-) is a powerful reducing agent.

Correct AnswerverifiedShow Answer

Which of the following complexes could have isomeric forms?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Give the systematic name for [CoCl₃(H₂O) ]^-.

Correct Answer
verified

The compound K₃[Fe(CN) ₆] is used in calico printing and wool dyeing. Give its systematic name.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The conversion of the chromate ion (CrO₄^2-) to the dichromate ion (Cr₂O₇^2-) is a redox process.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Give the systematic name for Cr(CO) ₃(NH₃) ₃.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The permanganate ion (MnO₄^-) is a powerful reducing agent.

Correct Answer
verified

Correct Answer
verified