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The discovery of the artificial transmutation of uranium in 1934
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Chemical analyst Fritz Strassman began investigating neutron-induced uranium decay
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uranium had the most number of protons of any known element (92)
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Hahn was sure of the chemical evidence transuranes
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The political situation in Germany had become dangerous for Meitner
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Hahn was awarded the Nobel Prize in chemistry
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Lise Meitner dies
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