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Dalton's Atomic Weights
Dalton prints his first table of realtive atomic weights. Dalton completes 5 Main Points of his theory.
-Elements are made up of atoms.
-Atoms of a given element are of identical properties.
-Atoms cannot be subdivided, created, or destroyed.
-Atoms of different elements combine to form compounds.
-In chemical reactions, atoms are combined, separted, or rearranged. -
JJ Thomson and the Electron
JJ Thomson is the first to suggest that the most fundamentsl until was 1,000 times smaller than the atom. These subatomic particles are now known as electrons. Thomson creates a plum pudding model of an atom. -
Rutherford disproves Thomson
Rutherford believes that JJ Thomson's plum pudding model of an atom is incorrect. Rutherford creates a new model focusing on a high central charge. This region would known as the "nucleus" for later years. -
Bohr's Atom
Bohr is awarded the Nobel Prize for Physics in 1922 thanks to his investigation of the structure of an atom. Bohr publishes his model of atomic structure. He introduces the theory of electrons orbiting the nucleus of an atom. His work becomes the basis for quantum theory. -
Chadwick's Neutron
Chadwick discovered an unknown particle of the atom know as the neutron. This particle has no charge and was crucial to later discoveries. -
Shrodinger's Modern Atom
Shrodinger creates the most correct and modern model of the atom.
