Dimitri Mendeleev was born in Tobilsk, Siberia, 7th Feb, 1834. He was the youngest of a gigantic, 14 siblings. Mendeleev was educated at his fathers gymnasium, and learned about glass and glass blowing at his mothers familys glass factory. Throughout mendeleevs education he showed great interest in both science and mathermatics. He went on to study science at st. Petersburg where he graduated from in 1856, though soon to go back seven years later to becom a professer.
In 1869, Mendeleev published the original periodic table compromised of 63 known elements in his book 'principles of chemistry'. From Mendeleevs formulation of the basis of the pereodic law,
..he was able to create his periodic table keeping to this law. This periodic table was arranged according to the atomic masses of the elements. However it wasn't as simple as that, the interesting thing about Mendeleevs periodic table is that he left spaces where mendeleev had predicted the existance of undiscovered elements along with the properties contained by these yet unknown elements, and where they would fit intot the table!
Mendeleevs theory of these undiscovered elements was prooved when three new elements were discovered over a period of time in his life time which fit the trends and the properties which he predicted