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The relations of chemistrj' are supposed to have been studied in such a way that the elementary facts and phenomena are accurately described, and the theories which develop from these facts and phe- nomena applied and used in a rational manner.Nevertheless, this work is expensive, so in order to keep providing tliis resource, we liave taken steps to prevent abuse by commercial parties, including placing technical restrictions on automated querying.We also ask that you: Make non-commercial use of the files We designed Google Book Search for use by individuals, and we request that you use these files for personal, non-commercial purposes.Google Book Search helps readers discover the world's books while helping authors and publishers reach new audiences. STRAND COMPANY EIGHT VARREN STREET Copyright, 1920 D. As far as the writer is aware, however, this is the first time that it is published in an extended form with modern conceptions of chemical structures, which them- selves rest upon the development of valence views. Thomson suggested the basic ideas of the electron conception of valence, but applied these to very few cases. Certain parts of Werner's theoretical views are used. These conceptions are of the utmost importance and indicate new methods of formulation. These theories have been developed gradually as the number and kinds of chemical reactions increased.You can search through the full text of this book on the web at | //books .google .com/I f^ Gbomical Utmiy I 1 CHEMICAL KEACTIONS THEIR THEORY AND MECHANISM Kj' GEORGE FALK, Ph. The modern interest in valence appears to have started in 1899 when Thiele published his paper qn partial valence. From that time on, the electron conception of valence occupied the minds of a number of chemists who attempted its application as shown in sporadic publications. At present, these appear to offer the only explanation which is at all satisfactory for what have been termed at various times "molecular" compounds. To apply them to the consideration of chem- ical reactions appears to be somewhat premature. They are not complete enough yet to account for all possible changes but they serve a useful purpose and make possible the study of relationships which would be obscure without them.
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Questions of stereochemistry have not been included. Molecular and atomic chemistry, and in general, kinetic relationships will be the keynote of the explanations advanced.