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Johann Döbriener
It starts in 1817 when Johann Döbriener began to sort the elements into some sort of order. -
Period: to
Periodic Timetable
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Alexandre-Emile Béguyer de Chancourtois
He was the first person to notice the a way to classify the elements — similar elements seem to occur at regular intervals when they are ordered by their atomic weights, but beacuse he was a geologist his paper was in geological terms not chemical and he had no diagram so his paper was over looked until the work of Dmitri Mendeleev. -
Lothar Meyer
Lothar Meyer made a very similarly designed periodic table to Dmitri Mendeleev but Lothar's periodic table only contained 28 elements some historians see him as the co-creator of the periodic table. HIs periodic table was not classified by atomic weights but by valance alone ( the number of bonds in an atom ). Meyer never came to the idea of predicting new elements and correcting atomic weights. -
John Newlands
A man called John Newlands when only 53 elements had been discorvered classified the elements into 11 groups based on similar physical properiets that the elements shared -
Dmitri Mendeleev
Mendeleevs Periodic TableDmitri was the first chemist to design a periodic table like the one we use today. He arranged the table by order of atomic mass corresponding to relative molar mass. Mendeleev also proved that some of the current atomic weights were wrong.
