Download or read book Electronic Structure and Chemical Bonding written by J. R. Lalanne and published by World Scientific. This book was released on 1996 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the problem of teaching the Electronic Structure and Chemical Bonding of atoms and molecules to high school and university students. It presents the outcomes of thorough investigations of some teaching methods as well as an unconventional didactical approach which were developed during a seminar for further training organized by the University of Bordeaux I for teachers of the physical sciences.The text is the result of a collective effort by eleven scientists and teachers: physicists and chemists doing research at the university or at the CRNS, university professors, and science teachers at high-school or university level.While remaining wide open to the latest discoveries of science, the text also offers a large number of problems along with their solutions and is illustrated by several pedagogic suggestions. It is intended for the use of teachers and students of physics, chemistry, and of the physical sciences in general.

Download or read book Valence and the Structure of Atoms and Molecules written by Gilbert Newton Lewis and published by . This book was released on 1923 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Valence and the Structure of Atoms and Molecules written by Gilbert Newton Lewis and published by . This book was released on 1923 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemistry 2e written by Paul Flowers and published by . This book was released on 2019-02-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Electrons and Valence written by Anthony Nicholas Stranges and published by . This book was released on 1982 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Along with the doctrine of atomism, the electron theory of valance ranks as one of the most fundamental developments in the history of modern chemistry. Yet, because the problems this theory solved were difficult ones, the modern understanding of electron bonding came only slowly and only after the minor contributions of many scientists and the major contributions of a few. Following the discovery of the electron by J. J. Thomson at Cambridge in 1897, scientists quickly concluded that the bonds holding atoms in a molecule were electrostatic or polar and resulted from complete electron transfer. Soon, though, other chemists pointed out that the behavior of many organic molecules was inconsistent with the polar theory. Despite the work of many scientists, it was not until 1916 that one---G. N. Lewis---succeeded in putting forward the currently accepted electronic mechanism for the non polar bond---the shared electron pair. In this lucidly written and carefully documented study, the author traces the gradual transition from a purely polar theory to one requiring two kinds of bonds, polar and nonpolar, and demonstrates that Lewis, with his far-reaching idea of the shared electron pair bond, was the central figure in this scientific drama. The focus on Lewis and other major researchers and the detailed attention to more minor actors illustrate both how individual contributions to the solution of perplexing problems fit within general trends and how one individual mind can rise above an era's state of knowledge to advance science. The coherent story told here helps meet a great need for the historical study of recent periods in the development of the sciences and should appeal not only to chemists but to all interested in the history of science and the history of thought.

Download or read book CK 12 Chemistry Second Edition written by CK-12 Foundation and published by CK-12 Foundation. This book was released on 2011-10-14 with total page 995 pages. Available in PDF, EPUB and Kindle. Book excerpt: CK-12 Foundation's Chemistry - Second Edition FlexBook covers the following chapters:Introduction to Chemistry - scientific method, history.Measurement in Chemistry - measurements, formulas.Matter and Energy - matter, energy.The Atomic Theory - atom models, atomic structure, sub-atomic particles.The Bohr Model of the Atom electromagnetic radiation, atomic spectra. The Quantum Mechanical Model of the Atom energy/standing waves, Heisenberg, Schrodinger.The Electron Configuration of Atoms Aufbau principle, electron configurations.Electron Configuration and the Periodic Table- electron configuration, position on periodic table.Chemical Periodicity atomic size, ionization energy, electron affinity.Ionic Bonds and Formulas ionization, ionic bonding, ionic compounds.Covalent Bonds and Formulas nomenclature, electronic/molecular geometries, octet rule, polar molecules.The Mole Concept formula stoichiometry.Chemical Reactions balancing equations, reaction types.Stoichiometry limiting reactant equations, yields, heat of reaction.The Behavior of Gases molecular structure/properties, combined gas law/universal gas law.Condensed Phases: Solids and Liquids intermolecular forces of attraction, phase change, phase diagrams.Solutions and Their Behavior concentration, solubility, colligate properties, dissociation, ions in solution.Chemical Kinetics reaction rates, factors that affect rates.Chemical Equilibrium forward/reverse reaction rates, equilibrium constant, Le Chatelier's principle, solubility product constant.Acids-Bases strong/weak acids and bases, hydrolysis of salts, pHNeutralization dissociation of water, acid-base indicators, acid-base titration, buffers.Thermochemistry bond breaking/formation, heat of reaction/formation, Hess' law, entropy, Gibb's free energy. Electrochemistry oxidation-reduction, electrochemical cells.Nuclear Chemistry radioactivity, nuclear equations, nuclear energy.Organic Chemistry straight chain/aromatic hydrocarbons, functional groups.Chemistry Glossary

Download or read book Chemistry written by Bruce Averill and published by . This book was released on 2007 with total page 1233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emphasises on contemporary applications and an intuitive problem-solving approach that helps students discover the exciting potential of chemical science. This book incorporates fresh applications from the three major areas of modern research: materials, environmental chemistry, and biological science.

Download or read book The Electronic Theory of Valency written by Nevil Vincent Sidgwick and published by . This book was released on 1927 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book All Valence Electrons S C F Calculations written by G. Klopman and published by Springer. This book was released on 1970-01-01 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Valence Electrons written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Chemical Bond written by Gernot Frenking and published by John Wiley & Sons. This book was released on 2014-07-08 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the perfect complement to "Chemical Bonding - Across the Periodic Table" by the same editors, who are two of the top scientists working on this topic, each with extensive experience and important connections within the community. The resulting book is a unique overview of the different approaches used for describing a chemical bond, including molecular-orbital based, valence-bond based, ELF, AIM and density-functional based methods. It takes into account the many developments that have taken place in the field over the past few decades due to the rapid advances in quantum chemical models and faster computers.

Download or read book Qualitative Valence Bond Descriptions of Electron Rich Molecules Pauling 3 Electron Bonds and Increased Valence Theory written by R. D. Harcourt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides qualitative molecular orbital and valence-bond descriptions of the electronic structures for electron-rich molecules, with strong emphasis given to the valence-bond approach. Electron-rich molecules form an extremely large class of molecules, and the results of quantum mechanical studies from different laboratories indicate that qualitative valence-bond descriptions for many of these molecules are incomplete in so far as they usually omit "long-bond" Lewis structures from elementary descriptions of bonding. For example, the usual representation for the electronic structure of the ground-state for 03 involves resonance between the (+1 o and Until standard Lewis structures ~ ~ (-I . b:'" ~d· . . . . , recently, any contribution to resonance of the "long-bond" (or spin-paired o •• / •• ,. . has been largely ignored. diradica~ Lewis structure However, it :0 . 0. . e-. . . . . ______ " has now been calculated to be a very important structure. For the ground-states of numerous other systems, calculations also indicate that "long-bond" structures are more important than is usually supposed, and therefore they should frequently be included in qualitative valence-bond descriptions of electronic structure. The book describes how this may be done, and some of the resulting consequences for the interpretation of the electronic structure, bond properties and reactivities of various electron-rich molecules. When appropriate, molecular orbital and valence bond descriptions of bonding are compared, and relationships that exist between them are derived.

Download or read book The Electron Theory of Valence 1900 1925 written by Anthony Nicholas Stranges and published by . This book was released on 1980 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book All Valence Electrons S C F Calculations written by F. Boschke and published by . This book was released on 1970-11 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Periodic Table written by Eric R. Scerri and published by Oxford University Press, USA. This book was released on 2019 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: The periodic table of elements is among the most recognizable image in science. It lies at the core of chemistry and embodies the most fundamental principles of science. In this new edition, Eric Scerri offers readers a complete and updated history and philosophy of the periodic table. Written in a lively style to appeal to experts and interested lay-persons alike, The Periodic Table: Its Story and Its Significance begins with an overview of the importance of the periodic table and the manner in which the term "element" has been interpreted by chemists and philosophers across time. The book traces the evolution and development of the periodic table from its early beginnings with the work of the precursors like De Chancourtois, Newlands and Meyer to Mendeleev's 1869 first published table and beyond. Several chapters are devoted to developments in 20th century physics, especially quantum mechanics and and the extent to which they explain the periodic table in a more fundamental way. Other chapters examine the formation of the elements, nuclear structure, the discovery of the last seven infra-uranium elements, and the synthesis of trans-uranium elements. Finally, the book considers the many different ways of representing the periodic system and the quest for an optimal arrangement.

Download or read book New Itinerant Electron Models of Magnetic Materials written by Gui-De Tang and published by Springer Nature. This book was released on 2021-05-17 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights a series of new itinerant electron models proposed based on the experimental results of electron spectra obtained since 1970. Although conventional magnetic ordering models were established before 1960, many problems remain to be solved. The new models in this book include an O 2p itinerant electron model for magnetic oxides, a new itinerant electron model for magnetic metals, and a Weiss electron pair model for the origin of magnetic ordering energy of magnetic metals and oxides. With these models, the book explains typical magnetic ordering phenomena including those that cannot be explained using conventional models. These new models are easier to understand than the conventional magnetic ordering models.

Download or read book Spectroscopy and Modeling of Biomolecular Building Blocks written by Jean-Pierre Schermann and published by Elsevier. This book was released on 2007-10-16 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectroscopy and Modeling of Biomolecular Building Blocks presents an overview of recent advances in the intertwining of the following research fields: photon and electron spectroscopy, quantum chemistry, modelling and mass-spectrometry. The coupling of these disciplines offers a new point of view to the understanding of isolated elementary building blocks of biomolecules and their assemblies. It allows the unambiguous separation between intrinsic properties of biomolecular systems and those induced by the presence of their environment. The first chapters provide background in modelling (I), frequency-resolved spectroscopy using microwave, infrared and UV photons, time-resolved spectroscopy in the femtosecond domain and energy-resolved electron spectroscopy (II) and production of gas-phase neutral and ionic biomolecular species, mass-spectrometry, ion mobility and BIRD techniques (III). Chapter IV is devoted to case studies of gas-phase experimental investigations coupled to quantum or classical calculations. The topics are structural studies of nucleobases and oligonucleotides, peptides and proteins, sugars; neuromolecules; non-covalent complexes; chiral systems, interactions of low-energy electrons with biomolecules in the radiation chemistry context and very large gas-phase biomolecular systems. The fifth chapter concerns the link between gas-phase and liquid-phase. Different treatments of solvation are illustrated through examples pointing out the influence of progressive addition of water molecules upon properties of nucleobases, peptides, sugars and neuromolecules. Offer a new perspective to the understanding of isolated elementary building blocks of bio molecules Includes case studies of experimental investigations coupled to quantum or classical calculations