A knowledge of atomic theory should be an essential part of every physicist's and chemist's toolkit. This book provides an introduction to the basic ideas that govern our understanding of microscopic matter, and the essential features of atomic structure and spectra are presented in a direct and easily accessible manner. Semi-classical ideas are reviewed and an introduction to the quantum mechanics of one and two electron systems and their interaction with external electromagnetic fields is featured. Multielectron atoms are also introduced, and the key methods for calculating their properties reviewed.
Niels Bohr and the Quantum Atom is the first book that focuses in detail on the birth and development of Bohr's atomic theory and gives a comprehensive picture of it. At the same time it offers new insight into Bohr's peculiar way of thinking, what Einstein once called his 'unique instinct and tact'. Contrary to most other accounts of the Bohr atom, the book presents it in a broader perspective which includes the reception among other scientists and the criticism launched against it by scientists of a more conservative inclination. Moreover, it discusses the theory as Bohr originally conceived it, namely, as an ambitious theory covering the structure of atoms as well as molecules. By discussing the theory in its entirety it becomes possible to understand why it developed as it did and thereby to use it as an example of the dynamics of scientific theories.
Chemistry 2e is designed to meet the scope and sequence requirements of the two-semester general chemistry course. The textbook provides an important opportunity for students to learn the core concepts of chemistry and understand how those concepts apply to their lives and the world around them. The book also includes a number of innovative features, including interactive exercises and real-world applications, designed to enhance student learning. The second edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Substantial improvements have been made in the figures, illustrations, and example exercises that support the text narrative. Changes made in Chemistry 2e are described in the preface to help instructors transition to the second edition.
Atomic and Nuclear Chemistry, Volume 1: Atomic Theory and Structure of the Atom presents the modern ideas of the atomic theory and atomic structure against the background of their historical development. Topics covered include the classification of elements; atoms and electrons; the wave mechanical model of the atom; and the determination of atomic weights. This volume is comprised of six chapters and begins by discussing the origin of the atomic theory, focusing on the role of John Dalton, Avogadro's hypothesis, and the introduction to the laws of chemical combination. The chapters that follow look at the work of the early scientists that led to the development of the periodic table of elements; the use of the Avogadro number to determine the actual masses of atoms and molecules; and the structure of the atom. The essential results of the simple wave mechanical treatment are summarized in the next chapter. This book concludes by considering developments in the determination of atomic weights. Some brief notes on the character and personality of the great scientists who are mentioned throughout the text are included. This book is intended for students and practitioners in the fields of chemistry and physics.
This book is the result of an international research team pursuing the intuitive notion that the atomic nucleus should have structural properties. Starting with a few logical assumptions, they discovered that many properties of the atom and the nucleus can be explained rationally without resorting to quantum mechanics or the limiting dogmas about the nucleus that dominate current physics. Using feedback from known experimental data, they identified several organizational principles that nature appears to use for constructing the elements, sometimes in unexpected ways. There are two assumptions underlying the Structured Atom Model (SAM). First, by replacing the neutron with a proton–electron pair, an electrostatic attractive force is reintroduced into the nucleus. The electrons acting as “glue” between the protons. Second, that “spherical dense packing” gives the nucleus its fractal shape—one of several organizational drivers in the buildup of the nucleus; other drivers being recurring substructures called “endings” and “nuclets.” A SAM nucleus is constructed using these substructures in various combinations. The result is a new periodic table that hints at several missing elements most of which are suspected to be unstable, but probably not all. What emerges is nothing less than a new paradigm for thinking about the nucleus and physics. In SAM, several known nuclear phenomena follow directly from the structural configuration of the nucleus, including nuclear instability, radioactivity/radioactive decay, the asymmetrical breakup of fission products, and the various nuclear decay schemes. In addition, the team discovered an unrecognized store of energy that may very well be responsible for Low Energy Nuclear Reactions (LENR).
This reference book contains information about the structure and properties of atomic and molecular particles, as well as some of the nuclear parameters. It includes data which can be of use when studying atomic and molecular processes in the physics of gases, chemistry of gases and gas optics, in plasma physics and plasma chemistry, in physical chemistry and radiation chemistry, in geophysics, astrophysics, solid-state physics and a variety of cross-discipli nary fields of science and technology. Our aim was to collect carefully selected and estimated numerical values for a wide circle of microscopic parameters in a relatively "not thick" book. These values are of constant use in the work of practical investigators. In essence, the book represents a substantially revised and extended edi tion of our reference book published in Russian in 1980. Two main reasons made it necessary to rework the material. On the one hand, a great deal of new high-quality data has appeared in the past few years and furthermore we have enlisted many sources of information previously inaccessible to us. On the other hand, we have tried to insert extensive information on new, rapidly progressing branches of physical research, such as multiply charged ions, Rydberg atoms, van der Waals and excimer molecules, complex ions, etc. All this brings us to the very edge of studies being carried out in the field.
