Question 1

Square planar complexes can exhibit both geometric and optical isomerism.

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

A)   Sc3+
B)   Ni2+
C)   Mn2+
D)   Ti4+
E)   Zn2+F) B) and E)
G) A) and B)

Question 3

Which of the following octahedral complexes should have the largest crystal field splitting energy, Δ?

Accepted Answer

A)   [Cr(H2O) 6]3+
B)   [Cr(SCN) 6]3-
C)   [Cr(NH3) 6]3+
D)   [Cr(CN) 6]3-
E)   [Cr(en) 3]3+ (en = ethylenediamine) F) A) and B)
G) A) and E) D

Question 4

All atoms of the first transition series of elements have the ground state electronic configuration [Ar]4s23dx, where x is an integer from 1 to 10.

Accepted Answer

A) True 
 B)False

Question 5

Write the formula for diamminedichloroethylenediaminecobalt(III)  bromide.

Accepted Answer

A)  [CoCl2(en) (NH3) 2]Br
B)  [CoCl2(en) (NH3) 2]Br2
C)  [CoCl2(en) 2(NH3) 2]Br
D)  [CoCl2(en) 2(NH3) 2]Br2
E)   None of these choices are correct.F) None of the above
G) B) and E) A

Question 6

A certain transition metal complex has the formula MX42+. If the metal ion has a d8 electron configuration, what is the shape of the complex?

Accepted Answer

A)   octahedral
B)  square pyramid
C)  tetrahedral
D)  trigonal pyramid
E)  square planarF) A) and B)
G) A) and C)

Question 7

Which of the following ions is most likely to form colored compounds?

Accepted Answer

A)   Sc3+
B)   Cu+
C)   Zn2+
D)   Cr3+
E)   Ca2+F) B) and D)
G) B) and C)

Question 8

How many unpaired electrons are there in the Fe3+ ion?

Accepted Answer

A)   5
B)   4
C)   3
D)   2
E)   1F) B) and C)
G) None of the above

Question 9

What is the coordination number of cobalt in the complex ion [Co(en) Cl4]-? (en = ethylenediamine)

Accepted Answer

A)   1
B)   2
C)   4
D)   6
E)   8F) A) and E)
G) A) and D)

Question 10

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

Accepted Answer

A)  d2sp
B)  d2p2
C)  dsp3
D)  sp3
E)  dsp2F) B) and E)
G) C) and E)

Question 11

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

Accepted Answer

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

Question 12

Which of the following elements has the ground state electron configuration, [Xe]4f145d106s1?

Accepted Answer

A)   Hg
B)   Ag
C)   Hf
D)   Au
E)   ThF) A) and C)
G) D) and E)

Question 13

Which of the following atoms has the biggest radius?

Accepted Answer

A)   Ti
B)   Cr
C)   Fe
D)   Ni
E)   ZnF) C) and D)
G) A) and B) A

Question 14

What is the highest possible oxidation state for palladium, Pd?

Accepted Answer

A)   +1
B)   +2
C)   +3
D)   +4
E)   +6F) B) and D)
G) A) and D)

Question 15

The M2+ ions of the first transition series of elements all have the general electronic configuration [Ar]4s23dx, where x is an integer from 1 to 8.

Accepted Answer

A) True 
 B)False

Question 16

The ground state electron configuration of a transition element atom cannot have more than one incomplete subshell.

Accepted Answer

A) True 
 B)False

Question 17

When the ethylenediaminetetraacetate ion (EDTA4-)  forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

Accepted Answer

A)   4
B)   6
C)   8
D)   10
E)   12F) B) and E)
G) A) and B)

Question 18

According to Valence Bond theory, in the square planar Ni(CN) 42- complex ion, the orbital hybridization pattern is

Accepted Answer

A)  sp3.
B)  dsp2.
C)  d2sp.
D)  d2sp3.
E)   None of these choices are correct.F) B) and E)
G) B) and D)

Question 19

Which of the following transition elements can have an oxidation number of +7?

Accepted Answer

A)   V
B)   Cr
C)   Mn
D)   Fe
E)   CoF) A) and E)
G) B) and E)

Question 20

Consider the following octahedral complex structures, each involving ethylene diamine and two different, unidentate ligands X and Y.  Which one, if any, of the following is a pair of optical isomers?

Accepted Answer

A)   1 and 2
B)   1 and 3
C)   1 and 4
D)   3 and 4
E)   None of these choices are correct.F) A) and E)
G) B) and C)

Exam 23: Transition Elements and Their Coordination Compounds

Square planar complexes can exhibit both geometric and optical isomerism.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following octahedral complexes should have the largest crystal field splitting energy, Δ?

Correct AnswerverifiedD

All atoms of the first transition series of elements have the ground state electronic configuration [Ar]4s23dx, where x is an integer from 1 to 10.

Correct AnswerverifiedShow Answer

Write the formula for diamminedichloroethylenediaminecobalt(III) bromide.

Correct AnswerverifiedA

A certain transition metal complex has the formula MX42+. If the metal ion has a d8 electron configuration, what is the shape of the complex?

Correct AnswerverifiedShow Answer

Which of the following ions is most likely to form colored compounds?

Correct AnswerverifiedShow Answer

How many unpaired electrons are there in the Fe3+ ion?

Correct AnswerverifiedShow Answer

What is the coordination number of cobalt in the complex ion [Co(en) Cl4]-? (en = ethylenediamine)

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 square planar complex?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following elements has the ground state electron configuration, [Xe]4f145d106s1?

Correct AnswerverifiedShow Answer

Which of the following atoms has the biggest radius?

Correct AnswerverifiedA

What is the highest possible oxidation state for palladium, Pd?

Correct AnswerverifiedShow Answer

The M2+ ions of the first transition series of elements all have the general electronic configuration [Ar]4s23dx, where x is an integer from 1 to 8.

Correct AnswerverifiedShow Answer

The ground state electron configuration of a transition element atom cannot have more than one incomplete subshell.

Correct AnswerverifiedShow Answer

When the ethylenediaminetetraacetate ion (EDTA4-) forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

Correct AnswerverifiedShow Answer

According to Valence Bond theory, in the square planar Ni(CN) 42- complex ion, the orbital hybridization pattern is

Correct AnswerverifiedShow Answer

Which of the following transition elements can have an oxidation number of +7?

Correct AnswerverifiedShow Answer

Consider the following octahedral complex structures, each involving ethylene diamine and two different, unidentate ligands X and Y. Which one, if any, of the following is a pair of optical isomers?

Correct AnswerverifiedShow Answer

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D

All atoms of the first transition series of elements have the ground state electronic configuration [Ar]4s²3d^x, where x is an integer from 1 to 10.

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A

A certain transition metal complex has the formula MX₄²⁺. If the metal ion has a d⁸ electron configuration, what is the shape of the complex?

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How many unpaired electrons are there in the Fe³⁺ ion?

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What is the coordination number of cobalt in the complex ion [Co(en) Cl₄]^-? (en = ethylenediamine)

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

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Which of the following elements has the ground state electron configuration, [Xe]4f¹⁴5d¹⁰6s¹?

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A

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The M²⁺ ions of the first transition series of elements all have the general electronic configuration [Ar]4s²3d^x, where x is an integer from 1 to 8.

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When the ethylenediaminetetraacetate ion (EDTA^4-) forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

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According to Valence Bond theory, in the square planar Ni(CN) ₄^2- complex ion, the orbital hybridization pattern is

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Which of the following transition elements can have an oxidation number of ⁺7?

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