The history Of the Atom and the Periodic table

Democritus

460

Democritus claimed that everything is made up of atoms
Greece

John Dalton

Jan 1, 1803

First Atomic theroy after the dark ages
England

Dimitri Mendeleev

Jan 1, 1869

Create the First periodic table
Russia

Crookes

Jan 1, 1895

identified the first known sample of helium,
England

JJ Thomson

Jan 1, 1897

Disocvered cathode Rays
England

Albert Einstein

Jan 1, 1905

Creates a way to prove atoms Exist
Switserland

Ernst Rutherford

Jan 1, 1911

proposed the nuclear atom as the result of the gold-foil experiment
England

Bohr

Jan 1, 1911

Created bohr model
Netherlands

Moseley

Jan 1, 1913

Created the way atoms are numbered today
England