1803- John Dalton Model of the Atom
John Dalton sees atoms as tiny, indestructible particles, with no internal structure.
1897- J.J. Thomson Model of the Atom
J.J. Thomson was a British Scientist who discovered the electron, leading to his "plum-puddling" model. He pictures electrons embedded in a sphere of positive electric charge.
1904- Hantaro Nagaoka Model of the Atom
Hantaro Nagaoka was a Japanese physicist who suggested that an atom has a central nucleus. Electrons move in orbits like the rings around Saturn.
1911- Ernest Rutherford Model of the Atom
Ernest Rutherford states that an atom has a dense, positively charged nucleus. Electrons move randomly in the space around the nucleus.
1913- Neils Bohr Model of the Atom
In Neil Bohr's model, the electrons move in spherical orbits at fixed distances from the nucleus.
1924- Louis de Broglie Model of the Atom
Louis de Broglie proposes that moving particles like electrons have some properties of waves. Evidence is collected to support this idea.
1926- Erwin Shrodinger- Electron Cloud Model of the Atom
Erwin created mathematical equations to describe the motion of electrons in atoms.
1932- James Chadwick Model of the Atom
He was a British physicist. He confirms the existence of neutrons, which have no charge. Atomic nuclei contain neutrons and positively charged protons.