Question 1

Which of the following atoms has the biggest radius?

Accepted Answer

A)  Ti 
B)  Cr 
C)  Fe 
D)  Ni 
E)  Zn 
A)  Ti 
B)  Cr 
C)  Fe 
D)  Ni 
E)  Zn A

Question 2

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) 
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) D

Question 3

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. 
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. A

Question 4

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

Accepted Answer

A)  Hg 
B)  Ag 
C)  Hf 
D)  Au 
E)  Th 
A)  Hg 
B)  Ag 
C)  Hf 
D)  Au 
E)  Th

Question 5

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

Accepted Answer

A)  V 
B)  Cr 
C)  Mn 
D)  Fe 
E)  Co 
A)  V 
B)  Cr 
C)  Mn 
D)  Fe 
E)  Co

Question 6

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 7

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) dsp2 
A) d2sp 
B) d2p2 
C) dsp3 
D) sp3 
E) dsp2

Question 8

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 9

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

Question 10

Square planar complexes can exhibit both geometric and optical isomerism.

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

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

Question 12

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

Accepted Answer

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

Question 13

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

Question 14

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)  8 
A)  1 
B)  2 
C)  4 
D)  6 
E)  8

Question 15

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

Question 16

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

Question 17

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 planar 
A)  octahedral 
B) square pyramid 
C) tetrahedral 
D) trigonal pyramid 
E) square planar

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

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)  12 
A)  4 
B)  6 
C)  8 
D)  10 
E)  12

Question 20

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

Accepted Answer

A)  5 
B)  4 
C)  3 
D)  2 
E)  1 
A)  5 
B)  4 
C)  3 
D)  2 
E)  1

Exam 23: Transition Elements and Their Coordination Compounds

Which of the following atoms has the biggest radius?

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

Write the formula for diamminedichloroethylenediaminecobalt(III) bromide.

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

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

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.

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?

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.

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

Square planar complexes can exhibit both geometric and optical isomerism.

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

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

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?

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

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?

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

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?

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

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

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

Keys to Studying Chemistry Definitions, Units, and Problem Solving

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces Liquids, Solids, and Phase Changes

The Properties of Mixtures Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics Rates and Mechanisms of Chemical Reactions

Equilibrium the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics Entropy, Free Energy, and Reaction Direction

Electrochemistry Chemical Change and Electrical Work

The Elements in Nature and Industry

Nuclear Reactions and Their Applications

Filters

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

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

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.

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.

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

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

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?

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?

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

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