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Fair. xv, [1], 675, [1] pages. Illustrated endpaper. Formulae. Illustrations. Sources of Figures. Appendices. Index. Spine torn. Front endpaper torn. Cover worn and soiled. Ex-library with the usual library markings. Some highlighting noted. This is Volume 3 of Kernchemie in Einzeldarstellungen. The transuranium elements (also known as transuranic elements) are the chemical elements with atomic numbers greater than 92 (the atomic number of uranium). All of these elements are unstable and decay radioactively into other elements. All of the elements with higher atomic numbers than 92 have been first discovered in the laboratory, with neptunium and plutonium later also discovered in nature. They are all radioactive, with a half-life much shorter than the age of the Earth, so any primordial atoms of these elements, if they ever were present at the Earth's formation, have long since decayed. Trace amounts of neptunium and plutonium form in some uranium-rich rock, and small amounts are produced during atmospheric tests of nuclear weapons. These two elements are generated from neutron capture in uranium ore with subsequent beta decays (e.g. 238U + n 239U 239Np 239Pu).