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1 Jan 1906 Jahr - 1906 - Discovery of "radioactinium" Hahn discovers "radioactinium", which is now known as actinium-x, an isotope of actinium. This discovery was made while working alongside Ernest Rutherford, the leading chemist at the time.

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Otto Hahn

ByRobbie Winfield
12 Nov 2019
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1 Jan 1906 Jahr
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~ 119 years ago
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