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The transuranium (or transuranic) elements are the chemical elements with atomic number greater than 92, which is the atomic number of uranium.All of them are radioactively unstable and decay into other elements.
In nuclear physics, the valley of stability (also called the belt of stability, nuclear valley, energy valley, or beta stability valley) is a characterization of the stability of nuclides to radioactivity based on their binding energy. [1]
1932 – James Chadwick discovers the neutron, leading to experiments in which elements are bombarded with the new particle. [5] [6]1933 – Leó Szilárd realizes the concept of the nuclear chain reaction, although no such reaction was known at the time.
Nuclear weapons; Background; Nuclear explosion; History; Warfare; Design; Testing; Delivery; Yield; Effects; Workers; Ethics; Arsenals; Target selection; Arms race ...
1945 – The Atomaton chapter of Sweet Adelines was formed by Edna Mae Anderson after she and her sister singers decided, "We have an atom of an idea and a ton of energy." The name also recognized the Atomic Age—just three days after Sweet Adelines was founded (13 July 1945), the first nuclear bomb, Trinity, was detonated.
A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium radioactively decays, usually by emitting an alpha particle. The half-life of this decay varies between 159,200 and 4.5 billion years for different isotopes, making them useful for dating the age of the Earth.
Fission is a nuclear reaction or radioactive decay process in which the nucleus of an atom splits into two or more smaller, lighter nuclei and often other particles. The fission process often produces gamma rays and releases a very large amount of energy, even by the energetic standards of radioactive decay.
The single reactor unit at the plant, AM-1 (" Атом Мирный", Atom Mirny, Russian for "Peaceful Atom"), had a total electrical capacity of 6 MW and a net capacity of around 5 MWe. Thermal output was 30 MW.