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1 feb 1900 año - Soddy (1900)- observed spontaneous disintegration of radioactive element into variants he called “isotopes” or totally new elements, he discovered “half-life”, and made initial calculations on the amount of energy that is released during decay

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Chem Project

ByAlyssa George
27 sep 2017

fecha:

1 feb 1900 año
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~ 124 years ago
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