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400 BCE
Democritus
His model shows a single round atom which lacks protons neutrons and electrons, he contributed that atoms were indivisible and indestructable -
John Dalton
Proposed that all matter is composed of atoms and that each atom of different elements have different properties. The model shows the different parts of an atom -
Eugene Goldstein
The model shows the travel of cathode rays versus normal rays he did not only discover these cathode rays he worked with canal rays -
JJ Thomson
He developed the first theoretical description of the inner structure of atoms and discovered the electron. Model shows that atoms are uniform spheres of positively charged matter -
Ernest Rutherford
model describes atoms as tiny with a dense and positively charged core known as a nucleus. Not only did he dicover this he was the first to split the atom. -
Niels Bohr
proposed theory for hydrogen atom that energy is transferred only in certain defined quantities. First to discover electrons travel in seperate orbits. Also contributed to quantum theory. -
Erwin Schrodinger
His model shows specific ideals about the orbits of electrons, he expanded on bohrs ideas but used mathmatical equations to further his studies -
Louis De Broglie
His model shows the wave nature of electrons, he also did research on the quantum theory. -
James Chadwick
Discovered the neutron and proved rutherfords theory he revolutionized the understanding of the atomic theory. His model shows the atom with the addition of the nuetron.
