Rutherford’s model of an atom
Rutherford’s scattering experiment in 1911 Rutherford performed an experiment in which he bombarded a think of the heavy metal like gold with a team of fast-moving alpha particles which are doubly ionized helium ions ........................ each having 2 unit of positive charge and 4 unit of mass for you these were obtained from radium placed in the cavity of block of lead and made into fine bean with a slit he observed the scattering of the Rays after hitting the foil by placing a circular zinc sulfide screen around the metal foil wherever alpha particles struck the screen a flash of light is produced at that point on the screen that the heavy body present in an atom must be occupying a very small volume from these experiments Rutherford made the following observations most of the particles that is 99.9 percent through the foil without undergoing any deflection some particles were deflected through small angles and a few were deflected through large angles very few only one in twelve thousand were deflected back that is through an angle greater than 90 degrees from these observations Rutherford through the following conclusions sine most of the alpha particles passed through the foil without undergoing any deflection there must be sufficient empty space within the atom