Question

Explain the alpha (a) scattering experiment.​

Answer 1

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Rutherford's alpha particle scattering experiment changed the way we think of atoms. Rutherford directed beams of alpha particles (which are the nuclei of helium atoms and hence positively charged) at thin gold foil to test this model and noted how the alpha particles scattered from the foil.

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Answer 2

This is also known as Rutherford's gold foil experiment or Geiger Marsden alpha scattering experiment. This is the experiment which led Rutherford to conclude that an atom is mostly empty and understand the concept of nucleus. Its outcome discarded the Thomson model of atom.