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Uranium occurs naturally in low concentrations in soil, rock and water, and is commercially extracted from uranium-bearing minerals such as uraninite. Uranium ore can be mined from open pits or underground excavations. The ore can then be crushed and treated at a mill to separate the valuable uranium from the ore. Uranium may also be dissolved directly from the ore deposits in the ground (in-situ leaching) and pumped to the surface. Uranium mined from the earth is stored, handled, and sold as uranium oxide concentrate (U₃O₈).

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Its radioactive properties were not recognized until 1866, and its potential for use as an energy source was not manifested until the mid-20th century. Uranium is now used to power commercial nuclear reactors that produce electricity and to produce isotopes used for medical, industrial, and defense purposes around the world.

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For many years, uranium was used primarily as a colorant for ceramic glazes and for tinting in early photography

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Low Enriched Uranium – contains a ²³⁵U concentration between 0.711 percent and 20 percent. Most commercial reactor fuel uses low enriched uranium (LEU) enriched to between 3 percent and 5 percent ²³⁵U. Uranium between 3 and 5 percent ²³⁵U is sometimes referred to as “reactor-grade uranium.”

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This was the first-ever use of an atomic bomb in warfare, and it used one famous element to wreak its havoc: uranium.

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DRAWING OF THE BOHR AND LEWIST DOT MODEL.

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DRAWING OF THE BOHR AND LEWIST DOT MODEL.

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ATOMIC NUMBER: 92
ATOMIC WAIGTH: 238.02891 u

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A radioactive, silvery metal. Uranium is a very important element because it provides us with nuclear fuel used to generate electricity in nuclear power stations. It is also the major material from which other synthetic transuranium elements are made.

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Martin Klaproth he was German chemist.

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Uranium was discovered in 1789