History of the periodic table

History of the periodic table

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cool, I guess...

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  • William Prout (1815)
  • In 1815, an English physician named William Prout made a hypothesis which was that hydrogen was  a fundamental element and all elements might be made made up of hydrogen. But later it was found that some atomic weights of elements were fractional.
  • H Hydrogen 1.008
  • In 1829 a German scientist named Johann Wolfgang managed to found similarities in elements, but his system of arrangement was later not succesful when more elements were discovered, they did not follow his rule of arrangement .
  • Johann Wolfgang (1829)
  • Alexandre Béguyer (1862)
  • In 1862 a French scientist named Alexandre Béguyer made a significant advance in the history of the development of the periodic table, he arranged the elements in a cylinder form with complete turns, which a complete turn was equivalent to an increase of weight of 16.
  • In 1869 a Russian chemoist named Dimitri Ivanovich examined the atomic masses of the elements and created his own arrangment of the elements, but later due to some irregularities at arranging, it failed. 
  • Dimitri Ivanovich (1869)
  • In the year 1884 a British  scientist by the name of Newlands tried to arrange the elements, by that time there were only 56 elements discovered, but later more elements were discovered and did not match his way of arranging them.
  • Newlands (1884)
  • In the year 1913 a british chemist named Henry Moseley finally arranged the elements in a way that was succesful in every way, it´s the periodic table model we know today and was arranged by the element´s atomic mass.
  • Henry Moseley (1913)
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