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may 14, 1903 - Marie and Pierre Curie

Description:

They discovered two new spontaneously radiating elements, which they named polonium and radium. A third element, actinium, was discovered by their colleague Andre Debierne.

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Atomic Timeline

ByTrinity Johnson
27 Sep 2018
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Date:

may 14, 1903
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~ 122 years ago
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