Question 1

The third-row element having a less negative electron affinity than the elements on either side of it on the periodic table is ________.

Accepted Answer

The answer of The third-row element having a less negative...

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 fluorine?

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

The tripositive ion with the electron configuration [Ar}3d6 is ________.

Accepted Answer

Question 4

Which ionization process requires the most energy?

Accepted Answer

A) W(g)→ W+(g)+ e- 
B) W+(g)→ W2+(g)+ e- 
C) W2+(g)→ W3+(g)+ e- 
D) W3+(g)→ W4+(g)+ e- 
A) W(g)→ W+(g)+ e- 
B) W+(g)→ W2+(g)+ e- 
C) W2+(g)→ W3+(g)+ e- 
D) W3+(g)→ W4+(g)+ e-

Question 5

The following four spheres represent an Mg atom,an Mg2+ ion,a S atom,and a S2- 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 + 2e⁻ and C → D + 2e⁻ 
B) A → B + 2e⁻ and D → C + 2e⁻ 
C) B → A + 2e⁻ and C → D + 2e⁻ 
D) B → A + 2e⁻ and D → C + 2e⁻ 
A) A → B + 2e⁻ and C → D + 2e⁻ 
B) A → B + 2e⁻ and D → C + 2e⁻ 
C) B → A + 2e⁻ and C → D + 2e⁻ 
D) B → A + 2e⁻ and D → C + 2e⁻

Question 6

Calculate the electron affinity for the formation of the hydride ion from the following information:

Accepted Answer

A) -50.1 kJ/mol 
B) -70.1 kJ/mol 
C) -816 kJ/mol 
D) -1632 kJ/mol 
A) -50.1 kJ/mol 
B) -70.1 kJ/mol 
C) -816 kJ/mol 
D) -1632 kJ/mol

Question 7

Of the following,which element has the highest first ionization energy?

Accepted Answer

A) Al 
B) Cl 
C) Na 
D) P 
A) Al 
B) Cl 
C) Na 
D) P

Question 8

The octet rule is most likely to fail occasionally for which of the following elements?

Accepted Answer

A) C 
B) N 
C) Na 
D) S 
A) C 
B) N 
C) Na 
D) S

Question 9

How many valence shell electrons does an atom of indium have?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 49 
A) 1 
B) 2 
C) 3 
D) 49

Question 10

-Which element,indicated by letter on the periodic table above,has a 3+ ion with the electron configuration [Kr]4d5?

Accepted Answer

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

Question 11

The ion Q2+ contains 10 electrons.The identity of element Q is ________.

Accepted Answer

Question 12

-Which sphere represents the monatomic cation?

Accepted Answer

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

Question 13

What is the general trend in ionization energy and electron affinity values?

Accepted Answer

A) Both decrease as one traverses a period from left to right and both decrease as one descends a group. 
B) Both decrease as one traverses a period from left to right and both increase as one descends a group. 
C) Both increase as one traverses a period from left to right and both decrease as one descends a group. 
D) Both increase as one traverses a period from left to right and both increase as one descends a group. 
A) Both decrease as one traverses a period from left to right and both decrease as one descends a group. 
B) Both decrease as one traverses a period from left to right and both increase as one descends a group. 
C) Both increase as one traverses a period from left to right and both decrease as one descends a group. 
D) Both increase as one traverses a period from left to right and both increase as one descends a group.

Question 14

Predict the product(s)of the reaction of Br2(aq)with I-(aq).

Accepted Answer

A) No reaction 
B) IBr3-(aq) 
C) BrO3-(aq)and I2(aq) 
D) Br-(aq)and I2(aq) 
A) No reaction 
B) IBr3-(aq) 
C) BrO3-(aq)and I2(aq) 
D) Br-(aq)and I2(aq)

Question 15

What is the third-row element having the successive ionization energies in kJ/mol: 738,1451,7733,10,540,13,630,17,995,21,703?

Accepted Answer

The answer of What is the third-row element having the...

Question 16

Which group of elements are found as diatomic molecules?

Accepted Answer

A) alkali metals 
B) alkaline earth metals 
C) halogens 
D) noble gases 
A) alkali metals 
B) alkaline earth metals 
C) halogens 
D) noble gases

Question 17

Which of the following species will have the highest ionization energy?

Accepted Answer

A) K+ 
B) Ar 
C) Cl- 
D) S2- 
A) K+ 
B) Ar 
C) Cl- 
D) S2-

Question 18

Which liberates the most energy?

Accepted Answer

A) Li(g)+ e- → Li-(g) 
B) Na(g)+ e- → Na-(g) 
C) K(g)+ e- → K-(g) 
D) Rb(g)+ e- → Rb-(g) 
A) Li(g)+ e- → Li-(g) 
B) Na(g)+ e- → Na-(g) 
C) K(g)+ e- → K-(g) 
D) Rb(g)+ e- → Rb-(g)

Question 19

Which is not generally considered to be a chemical reaction of the alkaline earth metal magnesium?

Accepted Answer

A) 2 Mg(g)+ O2(g)→ 2 MgO(s)at room temperature 
B) 3 Mg(s)+ N2(g)→ Mg3N2(s)at elevated temperatures 
C) Mg(s)+ 2 H2O(l)→ Mg(OH)2(s)+ H2(g)at room temperature 
D) Mg(s)+ F2(g)→ MgF2(s)at room temperature 
A) 2 Mg(g)+ O2(g)→ 2 MgO(s)at room temperature 
B) 3 Mg(s)+ N2(g)→ Mg3N2(s)at elevated temperatures 
C) Mg(s)+ 2 H2O(l)→ Mg(OH)2(s)+ H2(g)at room temperature 
D) Mg(s)+ F2(g)→ MgF2(s)at room temperature

Question 20

The oxidation number of the oxygen atoms in SrO2 is ________.

Accepted Answer

Exam 6: Ionic Bonds and Some Main-Group Chemistry

The third-row element having a less negative electron affinity than the elements on either side of it on the periodic table is ________.

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 fluorine?

The tripositive ion with the electron configuration [Ar}3d6 is ________.

Which ionization process requires the most energy?

Calculate the electron affinity for the formation of the hydride ion from the following information:

Of the following,which element has the highest first ionization energy?

The octet rule is most likely to fail occasionally for which of the following elements?

How many valence shell electrons does an atom of indium have?

-Which element,indicated by letter on the periodic table above,has a 3+ ion with the electron configuration [Kr]4d5?

The ion Q2+ contains 10 electrons.The identity of element Q is ________.

-Which sphere represents the monatomic cation?

What is the general trend in ionization energy and electron affinity values?

Predict the product(s)of the reaction of Br2(aq)with I-(aq).

What is the third-row element having the successive ionization energies in kJ/mol: 738,1451,7733,10,540,13,630,17,995,21,703?

Which group of elements are found as diatomic molecules?

Which of the following species will have the highest ionization energy?

Which liberates the most energy?

Which is not generally considered to be a chemical reaction of the alkaline earth metal magnesium?

The oxidation number of the oxygen atoms in SrO2 is ________.

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

The tripositive ion with the electron configuration [Ar}3d⁶ is ________.

-Which element,indicated by letter on the periodic table above,has a 3+ ion with the electron configuration [Kr]4d⁵?

The ion Q²⁺ contains 10 electrons.The identity of element Q is ________.

Predict the product(s)of the reaction of Br₂(aq)with I^-(aq).

The oxidation number of the oxygen atoms in SrO₂ is ________.