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Contents

About the Author

Introduction

Chapter 0The Periodic Table Exploration Begins!

Reference

Chapter 1Isotopes and Nuclear Patterns

Proton–Neutron Ratio

The Cobalt–Nickel and Tellurium–Iodine Atomic Mass Anomalies

Nuclear Shell Model of the Nucleus

Limits of Stability

Commentary

References

Chapter 2Selected Trends in Atomic Properties

Electronegativity

Electron Gain and Loss

Ionization Energy

Electron Affinity

Relativistic Effects on Atomic Properties

Commentary

References

Chapter 3First Period Problems

Hydrogen Location: An Overview

… And Then There Is Helium

Commentary

References

Chapter 4The Group 3 Problem

A History of the Debate

Commentary

References

Chapter 5Categorizations of the Elements

Nonmetals, Metals, and “In-Betweens”

Main Group Appellations

d-Block Metal Appellations

Other Appellations

Commentary

References

Chapter 6Isoelectronicity

Historical Definitions of Isoelectronic

Modern Definitions of Isoelectronic

Isoelectronicity: The Future

Commentary

References

Chapter 7Group and Period Patterns among the Main Group Elements

Main Group Elements

Group Trends

Group 1 (Alkali Metals)

Group 2 (Alkaline Earth Metals)

Group 13 (Triels)

Group 14 (Tetrels)

Group 15 (Pnictogens)

Group 16 (Chalcogens)

Group 17 (Halogens)

Group 18 (Aerogens)

Periodic Trends

Commentary

References

Chapter 8Patterns among the Transition Metals

What Is a Transition Metal?

Previous Classifications of Transition Metals

Categorizations of the Transition Metals

Categorizing the Early 4d–5d Elements

The Platinum Metals

Is There, in Fact, a Group 11?

A Hybrid Solution

Commentary

References

Chapter 9Group (n) and Group (n + 10) Relationships

Going Back to the Past

Definition of the Group (n) and Group (n + 10) Relationship

Group 3 and Group 13

Group 4 and Group 14

Group 5 and Group 15

Group 6 and Group 16

Group 7 and Group 17

Group 8 and Group 18

Group 1 and Group 11

Group 2 and Group 12

A Curious (n + 5) and (n + 10) Case

Commentary

References

Chapter 10Chemical “Knight’s Move” Relationship

The Group (n)/Period (m) and Group (n + 2)/Period (m + 1) Linkages

Laing’s Knight’s Move (K-M) Claims

Reevaluation of the Knight’s Move Relationship

Knight’s Move Relationships among “Double Pairs”

The Knight’s Move Relationship and the “Inert Pair” Effect

Commentary

References

Chapter 11Isodiagonality

Isodiagonality

Explanations for Isodiagonality

Isodiagonality of Lithium and Magnesium

Isodiagonality of Beryllium and Aluminum

Isodiagonality of Boron and Silicon

Isodiagonality of Carbon and Phosphorus

Isodiagonality of Nitrogen and Sulfur

Isodiagonality of Vanadium and Molybdenum

Isodiagonality of Tellurium and Astatine

Evidence-Based Isodiagonality

Commentary

References

Chapter 12Lanthanoids, Group 3, and Their Connections

Yttrium and Scandium

The 4f Elements

The Lanthanoids

Ion Charges of the Lanthanoids

Restructuring the Lanthanoids

External Lanthanoid Relationships

Commentary

References

Chapter 13Actinoid and Post-Actinoid Elements

The Actinoid Elements

Oxidation States of the Actinoids

Post-Actinoid Elements

And Beyond …

Commentary

References

Chapter 14Pseudo-Elements

Pseudo-Elements

Pseudo-Halogens

Combo Elements

Superatoms

Synthetic Metals

Commentary

References

Index

The Periodic Table

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