Periodic Table of Elements.
Periodic Table of Elements.
1869
In 19th century , Mendeleev organised periodic table. He organised it in year 1869.
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Dimitri Mendeleev
Atomic number was not used by Mendeleev to organize his periodic table. He organized the elements based on their atomic mass and properties, leaving gaps for undiscovered elements that were later filled.
He classified the elements according to their chemical properties.
Atomic Mass Octaves and Triads
Mendeleev from Russia was the first person to organize the periodic table of the elements
He organised the elements in the increasing order of the atomic mass.
he first organized his table in 1869 he did it by organizing them by atomic weights.
Mendeleev organized the elements according to their increasing atomic masses and considered their fundamental properties . He also considered the Hydrides and Oxides formed by the elements.