Uranium is a naturally occurring radioactive element, which has the atomic number of 92 and corresponds to the chemical symbol U in the periodic table. It belongs to a special group of elements called ...
Uranium is a radioactive metal central to one of the most devastating acts of war in history. On Aug. 6, 1945, a 10-foot-long (3 meters) bomb fell from the sky over the Japanese city of Hiroshima.
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