Question 1

Calculate the energy change for the formation of CaF2(s)from its elements in their standard states and the following information:

Accepted Answer

A) +4046 kJ/mol 
B) -965 kJ/mol 
C) -1214 kJ/mol 
D) -3286 kJ/mol 
A) +4046 kJ/mol 
B) -965 kJ/mol 
C) -1214 kJ/mol 
D) -3286 kJ/mol

Question 2

Each of the pictures (a)-(d)represents one of the following substances at 25°C: potassium,fluorine,iodine,potassium fluoride,not necessarily in that order.  
-Which picture corresponds to potassium fluoride?

Accepted Answer

A) picture (a) 
B) picture (b) 
C) picture (c) 
D) picture (d) 
A) picture (a) 
B) picture (b) 
C) picture (c) 
D) picture (d)

Question 3

Which of the following elements is a solid at room temperature?

Accepted Answer

A) fluorine 
B) chlorine 
C) bromine 
D) iodine 
A) fluorine 
B) chlorine 
C) bromine 
D) iodine

Question 4

Which liberates the most energy?

Accepted Answer

A) Br(g)+ e⁻ → Br⁻(g) 
B) Cl(g)+ e⁻ → Cl⁻(g) 
C) F(g)+ e⁻ → F⁻(g) 
D) I(g)→ I⁻(g) 
A) Br(g)+ e⁻ → Br⁻(g) 
B) Cl(g)+ e⁻ → Cl⁻(g) 
C) F(g)+ e⁻ → F⁻(g) 
D) I(g)→ I⁻(g)

Question 5

-Which element,indicated by letter on the periodic table above,has a 2+ ion with the electron configuration [Ar]3d10?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 6

-Atoms of which element,indicated by letter on the periodic table above,would be expected to have the highest first ionization energy,Ei1?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 7

Using shorthand notation,the ground-state electron configuration for Tl+ is predicted to be ________.

Accepted Answer

Question 8

To reach a noble gas electron configuration how many electrons would sulfur have to adopt?

Accepted Answer

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

Question 9

Which alkali metal forms preferentially an oxide rather than a peroxide or superoxide?

Accepted Answer

A) Li 
B) Na 
C) K 
D) Rb 
A) Li 
B) Na 
C) K 
D) Rb

Question 10

Which of the following ionic compounds would be expected to have the highest lattice energy?

Accepted Answer

A) LiF 
B) LiCl 
C) LiBr 
D) LiI 
A) LiF 
B) LiCl 
C) LiBr 
D) LiI

Question 11

What is the name for the group of elements indicated by the shaded portion of the periodic table?

Accepted Answer

A) alkali metals 
B) alkaline earth metals 
C) inner-transition metals 
D) transition metals 
A) alkali metals 
B) alkaline earth metals 
C) inner-transition metals 
D) transition metals

Question 12

Calculate the lattice energy for NaCl(s)using a Born-Haber cycle and the following information:

Accepted Answer

A) +34.8 kJ/mol 
B) +690.3 kJ/mol 
C) +787.2 kJ/mol 
D) +1512 kJ/mol 
A) +34.8 kJ/mol 
B) +690.3 kJ/mol 
C) +787.2 kJ/mol 
D) +1512 kJ/mol

Question 13

-Which element,indicated by letter on the periodic table above,has a 1+ ion with the electron configuration [Xe]6s2 4f14 5d10?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 14

-Which of the above pictures are more likely to represent covalent compounds?

Accepted Answer

A) pictures (a)and (b) 
B) pictures (a)and (d) 
C) pictures (b)and (c) 
D) pictures (b)and (d) 
A) pictures (a)and (b) 
B) pictures (a)and (d) 
C) pictures (b)and (c) 
D) pictures (b)and (d)

Question 15

Using shorthand notation,the ground-state electron configuration for C4- is predicted to be ________.

Accepted Answer

Question 16

The following four spheres represent a Na atom,a Na+ ion,a Cl atom,and a Cl- ion,not necessarily in that order.Use your knowledge about the relative sizes of atoms,cations,and anions to determine which of the following sets of reactions is most consistent with the sizes of the atoms and ions shown below.

Accepted Answer

A) A → B + e- and C → D + e- 
B) A → B + e- and D → C + e- 
C) B → A + e- and C → D + e- 
D) B → A + e- and D → C + e- 
A) A → B + e- and C → D + e- 
B) A → B + e- and D → C + e- 
C) B → A + e- and C → D + e- 
D) B → A + e- and D → C + e-

Question 17

Which is not a chemical reaction of the alkali metal sodium?

Accepted Answer

A) 4 Na(s)+ 2 O2(g)→ 2 Na2O(s)+ Na2O2(s) 
B) 2 Na(s)+ 2 NH3(l)→ 2 NaNH2(sol)+ H2(g) 
C) 2 Na(s)+ Cl2(g)→ 2 NaCl(s) 
D) 2 Na(s)+ 2 H2O(l)→ 2 NaOH(aq)+ H2(g) 
A) 4 Na(s)+ 2 O2(g)→ 2 Na2O(s)+ Na2O2(s) 
B) 2 Na(s)+ 2 NH3(l)→ 2 NaNH2(sol)+ H2(g) 
C) 2 Na(s)+ Cl2(g)→ 2 NaCl(s) 
D) 2 Na(s)+ 2 H2O(l)→ 2 NaOH(aq)+ H2(g)

Question 18

The four spheres below represent KS1U1P1+S1S1P0,CaS1U1P12+S1S1P0,ClS1U1P1-S1S1P0,and SS1U1P12-S1S1P0,not necessarily in that order.  
-Which sphere most likely represents the Ca2+ ion?

Accepted Answer

A) A 
B) B 
C) A or B 
D) C or D 
A) A 
B) B 
C) A or B 
D) C or D

Question 19

Interhalogen compounds can be produced by reacting two different halogens together.Which one of the following compounds does not exist?

Accepted Answer

A) ClF 
B) ClBr 
C) ClBr3 
D) IF3 
A) ClF 
B) ClBr 
C) ClBr3 
D) IF3

Question 20

Which alkali metal reacts with nitrogen to form a nitride?

Accepted Answer

A) Li 
B) Na 
C) K 
D) All of these 
A) Li 
B) Na 
C) K 
D) All of these

Exam 6: Ionic Bonds and Some Main-Group Chemistry

Calculate the energy change for the formation of CaF2(s)from its elements in their standard states and the following information:

Each of the pictures (a)-(d)represents one of the following substances at 25°C: potassium,fluorine,iodine,potassium fluoride,not necessarily in that order. -Which picture corresponds to potassium fluoride?

Which of the following elements is a solid at room temperature?

Which liberates the most energy?

-Which element,indicated by letter on the periodic table above,has a 2+ ion with the electron configuration [Ar]3d10?

-Atoms of which element,indicated by letter on the periodic table above,would be expected to have the highest first ionization energy,Ei1?

Using shorthand notation,the ground-state electron configuration for Tl+ is predicted to be ________.

To reach a noble gas electron configuration how many electrons would sulfur have to adopt?

Which alkali metal forms preferentially an oxide rather than a peroxide or superoxide?

Which of the following ionic compounds would be expected to have the highest lattice energy?

What is the name for the group of elements indicated by the shaded portion of the periodic table?

Calculate the lattice energy for NaCl(s)using a Born-Haber cycle and the following information:

-Which element,indicated by letter on the periodic table above,has a 1+ ion with the electron configuration [Xe]6s2 4f14 5d10?

-Which of the above pictures are more likely to represent covalent compounds?

Using shorthand notation,the ground-state electron configuration for C4- is predicted to be ________.

Which is not a chemical reaction of the alkali metal sodium?

The four spheres below represent K+,Ca2+,Cl-,and S2-,not necessarily in that order. -Which sphere most likely represents the Ca2+ ion?

Interhalogen compounds can be produced by reacting two different halogens together.Which one of the following compounds does not exist?

Which alkali metal reacts with nitrogen to form a nitride?

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

Calculate the energy change for the formation of CaF₂(s)from its elements in their standard states and the following information:

-Which element,indicated by letter on the periodic table above,has a 2+ ion with the electron configuration [Ar]3d¹⁰?

-Atoms of which element,indicated by letter on the periodic table above,would be expected to have the highest first ionization energy,E_i1?

Using shorthand notation,the ground-state electron configuration for Tl⁺ is predicted to be ________.

-Which element,indicated by letter on the periodic table above,has a 1+ ion with the electron configuration [Xe]6s² 4f¹⁴ 5d¹⁰?

Using shorthand notation,the ground-state electron configuration for C^4- is predicted to be ________.

The four spheres below represent K⁺,Ca²⁺,Cl^-,and S^2-,not necessarily in that order. -Which sphere most likely represents the Ca²⁺ ion?