The raisin pudding model (jujube cake model) was proposed by Thomson and was the first atomic model with subatomic structure.
Based on the discovery of electrons, Thomson proposed the atom's raisin pudding model (date nucleus model). Thomson thought [7]:
①Positive charges are evenly distributed in atoms like a fluid, and electrons are scattered in positive charges like raisins, and their negative charges cancel out those positive charges.
② When being excited, electrons will leave the atoms, producing cathode rays.
The alpha particle bombardment experiment (scattering experiment) completed by Thomson’s student Rutherford denied the correctness of the raisin pudding model (jujube cake model).