m). It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772. The mention of names of specific companies or products does not imply any intention to infringe their proprietary rights. Nitrogen - Periodic Table. (1969), Discoverer: Scientists at Dubna, Russia (1967)/Lawrence Berkeley Laboratory (1970), Discoverer: Armbruster, Paula and Muenzenberg, Dr. Gottfried, Element Category: unknown, probably a transition metal, Discoverer: David Anderson, Ruhani Rabin, Team Updraft, Element Category: unknown, probably a post-transition metal, Discoverer: Hisinger, Wilhelm and Berzelius, JÃ¶ns Jacob/Klaproth, Martin Heinrich. It's by far the most abundant element in its group in the periodic table and yet it is the last member of its family to be discovered. A crystal lattice is a repeating pattern of mathematical points that extends throughout space. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. They have an energy gap less than 4eV (about 1eV). Discoverer: Davy, Sir H. and ThÃ©nard, L.-J. and Gay-Lussac, L.-J. Atomic Mass Number â Does it conserve in a nuclear reaction? ), and shape. In contrast to conductors, electrons in a semiconductor must obtain energy (e.g. Semiconductors are materials, inorganic or organic, which have the ability to control their conduction depending on chemical structure, temperature, illumination, and presence of dopants. Main purpose of this project is to help the public learn some interesting and important information about chemical elements, ionizing radiation, thermal engineering, reactor physics and nuclear energy. Nitrogen is a 7. chemical element in the periodic table of elements. Discoverer: Scientists at Dubna, Russia (1964)/Albert Ghiorso et. Discoverer: Coster, Dirk and De Hevesy, George Charles, Discoverer: Elhuyar, Juan JosÃ© and Elhuyar, Fausto, Discoverer: Noddack, Walter and Berg, Otto Carl and Tacke, Ida.