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Module 1: Historia y desarrollo de la teoría atómica

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Chemistry - Marie Curie

Marie Curie

The discovery of X-rays by William Roentgen in 1895 prompted much
speculation about the internal structure of the atom. The discovery of the
radioactivity of uranium in 1896, by a French chemist, Henri Becquerel,
influencedwho discovered other elements that showed radioactivity similar
to uranium. Curie suspected that the amount of radiation given off by
uranium ores was significantly higher than could be accounted for by the
amount of uranium present. After processing several tonnes of pitchblende
(uranium ore), Curie isolated a highly radioactive element, which she named
after her homeland, Poland. A further four years of work led to the
isolation of the even more highly radioactive elementMarie Curie was the
first person to win the Nobel Prize twice. In 1901, Curie suggested that
the 'radioactive' behaviour of elements such as uranium and polonium might
be caused by changes occurring within the atom.

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