Rutherford’s alpha-particle scattering experiment was responsible for the discovery of

CONCEPT:

• In the Rutherford's Alpha Scattering Experiment, a beam of α-particles was made to fall on a thin gold foil. These particles then deflected in different directions and were detected by an α-particle detector.
• The following observations were made:

1. Most α-particles passed through the gold foil without suffering any deflection.
2. In passing through the foil, particles suffered different amounts of deflection.
3. While most of the particles suffered fewer deflections, a small number of particles suffered defections of nearly 180 °, practically retracing their paths, because the positive charge is concentrated at the center.
4. From this experiment he had concluded that almost all mass is concentrated at the center of an atom which was later termed as Nucleus.

EXPLANATION:

• Rutherford’s alpha-particle scattering experiment was responsible for the discovery of Nucleus.