Question 1

Define the chelate effect.

Accepted Answer

Chelate effect = an increased

Question 2

Name the compound, [Os(en)3]2 [NiCl2Br2]3.

Accepted Answer

tris(ethylenediamine

Question 3

Which of the following is not a chelating agent?

Accepted Answer

A) chloride anion 
B) EDTA 
C) porphine 
D) ethylenediamine 
E) oxalate anion 
A) chloride anion 
B) EDTA 
C) porphine 
D) ethylenediamine 
E) oxalate anion

Question 4

What is the coordination number of the iron atom in CaNa[Fe(CN)6]?

Accepted Answer

Question 5

The porphyrin compound that contains Mg (II)is called ________.

Accepted Answer

The answer of The porphyrin compound that contains Mg (II)is...

Question 6

What is the charge of the central metal ion in Ca3[Fe(CN)6]2?

Accepted Answer

A) 0 
B) 1+ 
C) 2+ 
D) 3+ 
E) 6+ 
A) 0 
B) 1+ 
C) 2+ 
D) 3+ 
E) 6+

Question 7

What is the most common geometry found in five-coordinate complexes?

Accepted Answer

A) trigonal bipyramidal 
B) octahedral 
C) tetrahedral 
D) linear 
E) icosahedral 
A) trigonal bipyramidal 
B) octahedral 
C) tetrahedral 
D) linear 
E) icosahedral

Question 8

The coordination numbers of cobalt (III)and of chromium (III)in their complexes are always ________.

Accepted Answer

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

Question 9

What is the coordination number of chromium in [Cr(H2O)4Cl2]+?

Accepted Answer

A) 8 
B) 6 
C) 4 
D) 2 
E) 12 
A) 8 
B) 6 
C) 4 
D) 2 
E) 12

Question 10

A geometrical isomer with like groups located on opposite sides of the metal atom is denoted with the prefix ________.

Accepted Answer

A) cis- 
B) trans- 
C) bis- 
D) tetrakis- 
E) d- 
A) cis- 
B) trans- 
C) bis- 
D) tetrakis- 
E) d-

Question 11

In humans, what percent of absorbed iron is found in blood?

Accepted Answer

A) 15 
B) 25 
C) 40 
D) 60 
E) 75 
A) 15 
B) 25 
C) 40 
D) 60 
E) 75

Question 12

Which mineral contains mercury?

Accepted Answer

A) cinnabar 
B) sphalerite 
C) rutile 
D) chromite 
E) cassiterite 
A) cinnabar 
B) sphalerite 
C) rutile 
D) chromite 
E) cassiterite

Question 13

Which of the following statements is (are)false?

Accepted Answer

A) The greater the energy gap in a metal complex, the shorter the wavelength of light the complex will absorb. 
B) Complex color depends on both the metal and the ligand. 
C) Metal complexes with an ammonia ligand have a larger energy gap than the corresponding fluoride complexes. 
D) Strong field ligands are associated with low energy gaps. 
E) Both A and C 
A) The greater the energy gap in a metal complex, the shorter the wavelength of light the complex will absorb. 
B) Complex color depends on both the metal and the ligand. 
C) Metal complexes with an ammonia ligand have a larger energy gap than the corresponding fluoride complexes. 
D) Strong field ligands are associated with low energy gaps. 
E) Both A and C

Question 14

Which of the following complexes has a coordination number of 6?

Accepted Answer

A) [Co(en)2Cl2]+ 
B) [Pt(NH3)2Cl2] 
C) [Cu(NH3)4]2+ 
D) [Ag(NH3)2]+ 
E) None of these complexes has coordination number 6. 
A) [Co(en)2Cl2]+ 
B) [Pt(NH3)2Cl2] 
C) [Cu(NH3)4]2+ 
D) [Ag(NH3)2]+ 
E) None of these complexes has coordination number 6.

Question 15

Based on entropy considerations alone, which homogeneous aqueous equilibrium would be expected to lie to the right?

Accepted Answer

A) AgI2- + 2Br- ⇔ AgBr2- + 2I- 
B) Ni(H2NC2H4NH2)32+ + 6NH3 ⇔ Ni(NH3)62+ + 3H2NC2H4NH2 
C) CoCl42+ + 6H2O ⇔ Co(H2O)62+ + 4Cl- 
D) Fe(NH3)62+ + C20H10N42- ⇔ Fe(NH3)2(C20H10N4) + 4NH3 
E) Cu(NH3)42+ + 6H2O ⇔ Cu(H2O)62+ + 4NH3 
A) AgI2- + 2Br- ⇔ AgBr2- + 2I- 
B) Ni(H2NC2H4NH2)32+ + 6NH3 ⇔ Ni(NH3)62+ + 3H2NC2H4NH2 
C) CoCl42+ + 6H2O ⇔ Co(H2O)62+ + 4Cl- 
D) Fe(NH3)62+ + C20H10N42- ⇔ Fe(NH3)2(C20H10N4) + 4NH3 
E) Cu(NH3)42+ + 6H2O ⇔ Cu(H2O)62+ + 4NH3

Question 16

Based on electron configuration, which is most likely colorless?

Accepted Answer

A) [Cu(NH3)4]2+ 
B) [Cd(NH3)4]2+ 
C) [Ni(NH3)6]2+ 
D) [Cr(NH3)5Cl]2+ 
E) [Co(NH3)6]2+ 
A) [Cu(NH3)4]2+ 
B) [Cd(NH3)4]2+ 
C) [Ni(NH3)6]2+ 
D) [Cr(NH3)5Cl]2+ 
E) [Co(NH3)6]2+

Question 17

What is the ligand in Ca3[Fe(CN)6]2?

Accepted Answer

A) Ca2+ 
B) Fe3+ 
C) CN- 
D) Fe(CN)63- 
E) Fe2+ 
A) Ca2+ 
B) Fe3+ 
C) CN- 
D) Fe(CN)63- 
E) Fe2+

Question 18

Trans-[Fe(H2O)2Cl4]2- must be ________.

Accepted Answer

A) tetrahedral 
B) octahedral 
C) square planar 
D) trigonal bipyramidal 
E) linear 
A) tetrahedral 
B) octahedral 
C) square planar 
D) trigonal bipyramidal 
E) linear

Question 19

The charge of the complex ion in [Zn(H2O)3Cl]Cl ________.

Accepted Answer

A) 0 
B) 1- 
C) 2+ 
D) 1+ 
E) 2- 
A) 0 
B) 1- 
C) 2+ 
D) 1+ 
E) 2-

Question 20

What is the oxidation state of iron in K3[Fe(CN)6]?

Accepted Answer

A) 0 
B) +2 
C) +3 
D) +4 
E) +6 
A) 0 
B) +2 
C) +3 
D) +4 
E) +6

Exam 23: Transition Metals and Coordination Chemistry

Define the chelate effect.

Name the compound, [Os(en)3]2 [NiCl2Br2]3.

Which of the following is not a chelating agent?

What is the coordination number of the iron atom in CaNa[Fe(CN)6]?

The porphyrin compound that contains Mg (II)is called ________.

What is the charge of the central metal ion in Ca3[Fe(CN)6]2?

What is the most common geometry found in five-coordinate complexes?

The coordination numbers of cobalt (III)and of chromium (III)in their complexes are always ________.

What is the coordination number of chromium in [Cr(H2O)4Cl2]+?

A geometrical isomer with like groups located on opposite sides of the metal atom is denoted with the prefix ________.

In humans, what percent of absorbed iron is found in blood?

Which mineral contains mercury?

Which of the following statements is (are)false?

Which of the following complexes has a coordination number of 6?

Based on entropy considerations alone, which homogeneous aqueous equilibrium would be expected to lie to the right?

Based on electron configuration, which is most likely colorless?

What is the ligand in Ca3[Fe(CN)6]2?

Trans-[Fe(H2O)2Cl4]2- must be ________.

The charge of the complex ion in [Zn(H2O)3Cl]Cl ________.

What is the oxidation state of iron in K3[Fe(CN)6]?

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

The Chemistry of Life: Organic and Biological Chemistry

Filters

Name the compound, [Os(en)₃]₂ [NiCl₂Br₂]₃.

What is the coordination number of the iron atom in CaNa[Fe(CN)₆]?

What is the charge of the central metal ion in Ca₃[Fe(CN)₆]₂?

What is the coordination number of chromium in [Cr(H₂O)₄Cl₂]⁺?

What is the ligand in Ca₃[Fe(CN)₆]₂?

Trans-[Fe(H₂O)₂Cl₄]^2- must be ________.

The charge of the complex ion in [Zn(H₂O)₃Cl]Cl ________.

What is the oxidation state of iron in K₃[Fe(CN)₆]?