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The first element discovered
Before ever written down, people knew about some of the elements in the periodic table, gold (Au), silver (Ag), copper (Cu), lead (Pb), tin (Sn), and mercury (Hg). In 1649, the first element was discovered by a scientists question. This element is phosphorous (P). -
Antoine Lavoisier
Antoine Lavoisier wrote out the first list of elements which contained 33 elements and was split between metals and non-metals -
Henrey Moseley
He determined the atomic number of each of the elements and modified the periodic law. -
Johann Dobereiner
Johann Dobereiner was a german chemist and began further discovering elements. -
Jacob Berzelius
He developed a table of Atomic weights and introduced letters to sybolize elements. -
Johann Doberenier
He grouped elements based on sililarities and patterns -
Lothar Meyer and Dmitri Ivanovich Mendeleev
Lothar Meyer and Dmitri Ivanovich Mendeleev both independatly created their own periodic tables very similar to the other versions. Mendeleev periodic table appeared in his work "On the Relationship of the Properties of the Elements to their Atomic Weights" in 1869. He also had predictions that were proved correct. On the other hand, Meyer's text had a shortened version of the periodic table. Hi table wasn't published untill 1870 -
A.E.Beguyer de Chancourtois
A.E.Beguyer de Chancourtois made use of the Atomic weights and sicovered that elements on the periodic table are in order depending on the weight. -
John Newlands
John Newlands was an English chemist who brought upon Law of Octaves. he related it to music as a way of explaining it to people. He studied the periodic table in detail and went a step further and arranged them by their atomic weight -
More elements being discovered
63 elements in total have been discovered by 1869. -
Dmitiri Mendeleeve
He was a Russian scientist who originally created it at the age of 35 when he created a table with 65 elements. He predicted there are more unknown elements, and was correct. He proposed the first periodic law. -
Glenn Seaborg
Glenn Seaborg discovered more elements, jumping from 92 to 102. He re designed the table which is the current form. Glenn Seaborg seperated lanthanide and actinide series and put them at the bottom of the table. He done this so that the table wouldn't be too wide.
