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Radium
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1936 1st radioactive substance produced synthetically (radium E)
1902 Marie and Pierre Curie isolate radioactive element radium 1902 Marie and Pierre Curie isolated the radioactive element radium 1898 Scientists Pierre and Marie Curie discovers radium 1867 Marie Curie, French Scientist, discovered radium, Nobel 1903, 1911 |
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