Gmelin's Handbook of Inorganic Chemistry, and Isotopes PDF Download
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Author: Leopold Gmelin
Publisher:
ISBN:
Category : Chemistry, Inorganic
Languages : en
Pages : 112
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Author: Leopold Gmelin
Publisher:
ISBN:
Category : Chemistry, Inorganic
Languages : en
Pages : 112
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Book Description
Author: Leopold Gmelin
Publisher:
ISBN:
Category : Chemistry, Inorganic
Languages : en
Pages : 180
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Author:
Publisher:
ISBN:
Category : Chemistry, Inorganic
Languages : de
Pages : 370
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Author:
Publisher:
ISBN:
Category : Chemistry, Inorganic
Languages : en
Pages : 180
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Author: Reiner Ditz
Publisher: Springer
ISBN: 9783540936114
Category : Science
Languages : en
Pages : 416
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In connection with the recent treatment of radium and the actinides, the Gmelin Institute is carrying out the description of thorium and its compounds. The Supplement Volumes A 2, A 3, A 4, and A 5 with the history, isotopes, uses, the recovery of thorium and general properties of thorium atom and ions, the thermodynamics of its compounds and solutions, spectroscopic data and analytical chemistry, biological behavior, health protection and safety control have already been published. The Supplement Volumes C 1, C 2 and C 3 describing the compounds with the noble gases, hydrogen, oxygen compounds and nitrogen compounds are also available; also have been published Supplement Volumes C 5 and C 7 describing the compounds with sulfur, selenium, tellurium, and boron, carbonates, thiocynates, alkoxides, and carboxylates. The Supplement Volumes D 1, D 2, and D 3 describing the properties of thorium ions in solution and the solvent extraction of thorium as well as Supplement Volume E describing the coordination compounds also have been published. The present volume begins, in a summary fashion, with a description of the natural occurrence of the element Th. Especially stressed are those facts that are most important in understanding its geological distribution on Earth (as, e.g., mode of occurrence and distribution among minerals) and its behavior in minerals (as, e.g., mode of occurrence and distribution among minerals) and its behavior in minerals (as, e.g., diadochy and metamictization of minerals). Attached is a tabulation of the highest reported Th or ThO2 content in minerals that normally (by their crystal-chemical formula) do not contain Th. The main part of the present volume describes the minerals of Th. As can be seen from the crystal-chemical formulas, there are, in addition to a few minerals containing Th as the sole cation, a number of minerals that contain Th as an additional cation or as a diadochic element. In the case of diadochic substitution the mineral may represent a Th-rich end member of a solid-solution series and, therefore, is described as a separate Th mineral, or may only sporadically contain higher amounts of Th (no mineral description is given). The mineral descriptions, in this volume including oxides, carbonates and phosphates/siliconphosphates of Th, comprise the following topics: occurence; chemistry; crystal form and structure; optical and other physical properties; and chemical and thermal behavior. The silicates of Th and the deposits of Th will be described in the volume "Thorium" Suppl. Vol. A 1b, that also contains a mineral index for both volumes.
Author:
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ISBN:
Category : Chemistry, Inorganic
Languages : de
Pages : 0
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Author: Dieter Koschel
Publisher:
ISBN: 9780387935836
Category :
Languages : en
Pages : 353
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Author: Hans K. Kugler
Publisher: Springer Science & Business Media
ISBN: 3662058685
Category : Science
Languages : en
Pages : 305
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Astatine is - besides radon and francium - the only natural radioelement which only has short-Lived isotopes, thereby excluding experiments with . . weighable" amounts of the element. This implies that all available data on physics and chemistry of this element are 12 16 based on experiments on the tracer scale with 10- to 10- g - and this will also not change in future because no longer-Lived isotopes as yet known are to be expected. Due to the fact that the only isotope of At occurring in the natural decay series, 219At, results from the 0. 005% a-branching of 223Fr which itself is produced by the only 1. 38% a-branching of 227 Ac - a member of the 235U series - there is no chance to recover substantial amounts of 219At from natural sources for sCientific research of At. All studies, therefore, are being done with the isotopes 209At to 211At having half-lives in the few hours region and being obtained by irradiation of bismuth with a-particles via (a,xn) reactions or by proton irradiation of heavy elements via spallation reactions. The mostly used isotope is 7. 22 h 211At. The fast separation of the obtained At isotopes is no very difficult procedure and is either being done by wet adsorption-precipitation techniques or making use of its high volatility by destilling in air.
Author: Rudolf Keim
Publisher:
ISBN:
Category : Chemistry, Inorganic
Languages : de
Pages : 346
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Author:
Publisher:
ISBN: 9780387935119
Category :
Languages : en
Pages : 0
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