history of atoms 2

history of atoms 2

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  • In 1779, Joseph Proust proposed the law of definite proportions.
  • While In 1880, John Dalton formulated the atomic theory & proposed the law of multiple proportions
  • Moving on, Antoine Becquerel & Marie Curie observed that radioactivty cause some atoms to break down spontaneuosly
  • Don't worry. I think this is something your a little more familiar with.
  • Dmitry Mendeleev arranged the elements in the periodic table according to its atomic mass
  • While it was Joseph John Thomson that discovered electrons in 1897.
  • e-
  • Well it seems like you actually learned something.
  • Anyways, it was Wilhelm Röntgen that discovered electrons
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