Historical Figures in Chemistry

developed the model of the atom in which electrons are surrounding a small positive nucleus.

concluded that an atom has a small positive nucleus

developed the idea of atoms - there is a smallest unit of matter

developed the Plum Pudding Model

postulated the equivalence of mass and energy

credited with discovering the neutron

"Father of the Periodic Table"

developed the idea of discrete energy levels causing different colors of light

performed the gold foil experiment

calculated the charge on the electron

discovered the electron