evolution of the atomic model

john dalton

1803

pictured atoms as tiny indestructible atoms with no internal structure

1897

1897

British scientist descovers the electron. The later leads to his plum
pudding model. he pictures electrons embedded in a sphere a posit

hantaro nagaoska

1904

japanese physicist suggests that an atom has central nucleus. electrons move in orbit like the rings around Saturn

ernest rutherford

1911

finds that an atom has a small dense positively charged nucleus electrons move around the nucleus