Radioactive elements
in the periodic table of elements, a group of properties which are different from those elements who have studied it. Ie radiation can then become the new elements. These changes happen
in 1896 (BE 2439), Antoine Henri-back Glen Laurel. French scientists When the film camera was covered with black paper with a compound of uranium. The film is like a light. And when tested with compounds of uranium other works as well, so that will have radiation emitted from uranium
later, Pierre and Marie Curie discovered the element polonium, radium and thorium it can radiate. The same phenomenon radioactive element itself continuously is called. radioactivity The changes within the nucleus of an unstable isotope. And the elements with this treasure that. Radioactive elements Radioactive elements of atomic number higher than 83, but with radioactive elements, some of which has an atomic number less than 83, such as {} ^ {43} Pt naturally found radioactive species such as {} ^ {238} U {} ^ {. 235} U {} ^ {232} Th and {} ^ {222} Rn may write U-238 U-235 Th-232 and Rn-222 was also a scientist to synthesize radioactive elements for use in various fields. more
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