Question 1

The elements in Group 2A are known by what name?

Accepted Answer

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

Question 2

Briefly explain why the atomic radius decreases within a period when moving from left to right.

Accepted Answer

Effective nuclear charge incre

Question 3

Write the ground-state electron configuration for Ni2+.

Accepted Answer

Question 4

Consider the element with the electron configuration [Kr]5s24d105p5. This element is

Accepted Answer

A) a representative element 
B) a transition metal 
C) an alkali metal 
D) an actinide element 
E) a noble gas 
A) a representative element 
B) a transition metal 
C) an alkali metal 
D) an actinide element 
E) a noble gas

Question 5

Which one of the following elements forms a stable 2+ cation?

Accepted Answer

A) Kr 
B) I 
C) Se 
D) Al 
E) Ba 
A) Kr 
B) I 
C) Se 
D) Al 
E) Ba

Question 6

The general electron configuration for noble gas atoms is

Accepted Answer

A) ns2np6 
B) ns2np5 
C) ns2np4 
D) ns2np3 
E) ns2 
A) ns2np6 
B) ns2np5 
C) ns2np4 
D) ns2np3 
E) ns2

Question 7

Consider the following reaction 2A + 3F2 $\rarr$ 2AF3.What is a reasonable guess for the identity element A?

Accepted Answer

Aluminum, or other e

Question 8

Which of the following elements has the greatest electron affinity (largest positive value)?

Accepted Answer

A) Mg 
B) Al 
C) Si 
D) P 
E) S 
A) Mg 
B) Al 
C) Si 
D) P 
E) S

Question 9

What is the charge on the monatomic ion that calcium forms in its compounds?

Accepted Answer

A) +2 
B) +1 
C) -1 
D) -2 
E) -3 
A) +2 
B) +1 
C) -1 
D) -2 
E) -3

Question 10

How many 3d electrons does an Fe3+ ion have?

Accepted Answer

A) 9 
B) 6 
C) 5 
D) 4 
E) 3 
A) 9 
B) 6 
C) 5 
D) 4 
E) 3

Question 11

Which one of the following does not have [Xe] as its electronic configuration?

Accepted Answer

A) Te2- 
B) I- 
C) Cs+ 
D) Ba2+ 
E) Sn4+ 
A) Te2- 
B) I- 
C) Cs+ 
D) Ba2+ 
E) Sn4+

Question 12

For silicon atoms, which ionization energy will show an exceptionally large increase over the preceding ionization energy?

Accepted Answer

A) 2nd 
B) 3rd 
C) 4th 
D) 5th 
E) 6th 
A) 2nd 
B) 3rd 
C) 4th 
D) 5th 
E) 6th

Question 13

Which of the atoms listed below has the largest radius?

Accepted Answer

A) Cl 
B) I 
C) P 
D) Sb 
E) Se 
A) Cl 
B) I 
C) P 
D) Sb 
E) Se

Question 14

Why do the group 5A elements have relatively small electron affinities compared to the neighboring nonmetals in the corresponding rows?

Accepted Answer

Because the np orbitals are ha

Question 15

For which of the following reactions is the enthalpy change equal to the third ionization energy of vanadium?

Accepted Answer

A) V2+(g)$\rarr$V3+(g)+ e- 
B) V3+(g)+ e- $\rarr$ V2+(g) 
C) V(g)$\rarr$ V3+(g)+ 3e- 
D) V2-(g)+ e- $\rarr$ V3-(g) 
E) V3+(g)$\rarr$V4+(g)+ e- 
A) V2+(g)$\rarr$V3+(g)+ e- 
B) V3+(g)+ e- $\rarr$ V2+(g) 
C) V(g)$\rarr$ V3+(g)+ 3e- 
D) V2-(g)+ e- $\rarr$ V3-(g) 
E) V3+(g)$\rarr$V4+(g)+ e-

Question 16

What is the charge on the monatomic ion of nitrogen, the nitride ion?

Accepted Answer

A) +2 
B) +1 
C) -1 
D) -2 
E) -3 
A) +2 
B) +1 
C) -1 
D) -2 
E) -3

Question 17

The alkali metal elements are found in _______ of the periodic table.

Accepted Answer

A) Group 1A 
B) Group 2A 
C) Group 3A 
D) Period 7 
E) Period 1 
A) Group 1A 
B) Group 2A 
C) Group 3A 
D) Period 7 
E) Period 1

Question 18

Which of the elements listed below has the greatest atomic radius?

Accepted Answer

A) B 
B) Al 
C) S 
D) P 
E) Si 
A) B 
B) Al 
C) S 
D) P 
E) Si

Question 19

Write the ground-state electron configuration for Al3+.

Accepted Answer

Question 20

Which of the following is the electron configuration of the iron(III)ion?

Accepted Answer

A) [Ar]3d5 
B) [Ar]4s13d5 
C) [Ar]4s23d3 
D) [Ar]3d6 
E) [Ar]4s23d9 
A) [Ar]3d5 
B) [Ar]4s13d5 
C) [Ar]4s23d3 
D) [Ar]3d6 
E) [Ar]4s23d9

Exam 8: Periodic Relationships Among the Elements

The elements in Group 2A are known by what name?

Briefly explain why the atomic radius decreases within a period when moving from left to right.

Write the ground-state electron configuration for Ni2+.

Consider the element with the electron configuration [Kr]5s24d105p5. This element is

Which one of the following elements forms a stable 2+ cation?

The general electron configuration for noble gas atoms is

Consider the following reaction 2A + 3F2 →\rarr→ 2AF3.What is a reasonable guess for the identity element A?

Which of the following elements has the greatest electron affinity (largest positive value)?

What is the charge on the monatomic ion that calcium forms in its compounds?

How many 3d electrons does an Fe3+ ion have?

Which one of the following does not have [Xe] as its electronic configuration?

For silicon atoms, which ionization energy will show an exceptionally large increase over the preceding ionization energy?

Which of the atoms listed below has the largest radius?

Why do the group 5A elements have relatively small electron affinities compared to the neighboring nonmetals in the corresponding rows?

For which of the following reactions is the enthalpy change equal to the third ionization energy of vanadium?

What is the charge on the monatomic ion of nitrogen, the nitride ion?

The alkali metal elements are found in _______ of the periodic table.

Which of the elements listed below has the greatest atomic radius?

Write the ground-state electron configuration for Al3+.

Which of the following is the electron configuration of the iron(III)ion?

Chemistry: The Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solution

Gases

Thermo-Chemistry

Quantum Theory and the Electronic Structure of Atoms

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Chemistry in the Atmosphere

Entropy, Free Energy, and Equilibrium

Electrochemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Nuclear Chemistry

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

Write the ground-state electron configuration for Ni²⁺.

Consider the element with the electron configuration [Kr]5s²4d¹⁰5p⁵. This element is

Consider the following reaction 2A + 3F₂ $\rarr$ 2AF₃.What is a reasonable guess for the identity element A?

How many 3d electrons does an Fe³⁺ ion have?

Write the ground-state electron configuration for Al³⁺.