History of the Periodic Table

The history of the periodic table started with John Dalton who had theories on atomic weights. He said that different atoms of different elements have different weights.  He observed the weather everyday and came up with 200,000 observations.  Dalton was born in Lake District in 1766, he was a reader and a thinker.  He came up with the phrase "ultimate particles".  Bezalius set out to find the atomic weight of every element.  He wanted to find the order on the elements.  Bezalius discovered Silicon and found the weight of 45 elements.  He was also a glass blower which takes years to master the skill.  Wolfgang Doberiner believed chemical reactions could determine the atomic weight of elements.  He came up with "triads".  Mendeleev discovered the periodic table.  He played chemical solitare.  His mother's name was Maria and he lost his mom three weeks after arriving in Moscow.  Cannizaro said that the densities of volume and gases could determine their atomic weight.  Newlands came up with the "Law of Octaves" which meant every eighth element would be similar to the first.  He also came up with "Law of Periodicity".  Moseley organized the periodic table according to atomic number, he was able to do this because of the discovery of the proton.


Option 2-  Dmitri Mendeleev lost his mom three weeks after he arrived in Moscow.  His mom wanted him to excel in whatever he did and that is what motivated him to do so.  He was able to use adversity to excel in his works because he would want to make his mother proud of what he accomplished.  By doing so, this made him very successful in the end.