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Dalton
He was the first one that started using symbols to represent atoms. He had many theories and one of them was that the atom was a solid sphere. -
Thompson
He investigated the atom and that's how he discovered the electrons. He created the Plum Pudding Model -
Rutherford
Rutherford made experiments with gold foils that made him get a theory. He created the Nuclear Theory made the center of the atom the nucleus -
Bohr
Bohr had theories about electrons. So he made rules of what electrons do. -
Schrodinger
He used wave mechanics as a mathematical model of atoms. He made it into a model and that we use nowadays to check the orbitals. -
Done