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1802 BCE
John Dalton
Dalton was a chemist and a physicist, he proposed that all matter is made of microscopic, indivisible objects called atoms. He called this model, the billiard ball model. -
J. J. Thompson
Thompson proposed the atom was made of much smaller particles swimming around within the atom. He dubbed this the 'plum pudding model' -
Rutherfords Model
Rutherford discovered the nucleus and explained it as a small core of positively charged energy orbited by electrons. -
Bohrs Model
The Bohr model is explained as a positively charged nucleus surrounded by orbiting it. -
Quantum Model
No two electrons within the Quantum model can have the same atomic number.
