-
dalton model
john dalton pictures atoms as tiny, indestructible particles, with no internal structure. -
thomson model
j.j. thomson, a british scientist, discovers the electron. the later leads to his "plum-pudding" model. He pictures electrons embedded in a shape of positive electrical charge. -
hantaro nagaoka
a japanese physicist, suggests that an atom has a central nucleus. electrons move in orbit like the rings around saturn -
rutherford model
new zealand physicist ernest rutherford finds that an atom has a small, dense, positively charged nucleus. electrons move around the nucleus -
bohr model
in miels bohr's model, the electron moves in a circular orbit at fixed distances from the nucleus -
Louis de Broglie
French physicist lousi de broglie proposes taht moving particles like electrons have some properties of waves.within a few years, experimental evidence supports the idea -
erwin schrodinger
He develops mathmatical equations to describe the motion of electrons in atoms. his work leads to the electron cloud model -
Quantum model
erwin schrodinger used these new results to devise and solve a mathmatical equation describing the behavior of the electron in a hydrogen atom the quantum model comes from the mathmatical solutions to the schrodinger equation -
james chadwick
an english physicist,confirms the existence of neutrons, which have no charge. atomic nuclei contain neutrons and positively charged protons