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  • hello Tony could you explain me more about the chemical elements
  • I really don't know much about the periodic table but if you want we can go to the library to investigate
  • 2-sorry do you have a section of books about the periodic table
  • 1-hi guys my name is john i'm the librarian i'll show you the section you need
  • in 1814 berzelius classified the elements according to their electronegativity then in 1815 willian proust proposed the ordering based on hydrogen
  • in 1864 chancourtois arranged the elements in a telluric screw then in 1869 newlands organized the elements according to their atomic masses
  • 1-In 1914 Mendeleev classified the chemical elements by the recent value of their atomic masses, and grouped them in rows and columns in such a way that the elements of the same column would present a similar behavior.
  • 2-This chemist also won many awards such as the Davy Metal, Copley Medal and Demidov Prize.
  • comic created by :Alejandra soto 8R
  • 2-the periodic table was a very important discovery which covers the chemical elements, this discovery helped the world and the chemical industry because pigments, medicines and new materials were developed thanks to the periodic table
  • 1-today we learned about the history of the periodic table but we must also talk about its importance
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