how, nucleus is discovered who is discovered of nucleus write the experiment and conclusions
Answers
Answer:
More about nucleus : The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based. Nucleus structure in the attachment ⬆
Discovery of Nucleus:
In 1911, Lord Ernest Rutherford discovered nucleus during his gold foil scattering experiment. A thin gold foil was bombarded with positively charged alpha particles from a radioactive source of the Alpha-particles passed through without any deflection. The point at which Alpha-particle struck the circular zinc sulphide screen, a flash of light was given out.
Conclusion of Rutherford's experiment:
1) Most of the Alpha-particles passed
through the foil straight without any
deflection showing that the atom is made
up of large empty space.
2. Very few Alpha-particles were deflected
through small angles showing that there
must be positively charged particles
present at the centre of the atoms.
3. Some Alpha-particles deflected back and
as Alpha-particles are heavier they could
be deflected back only when they strike
someheavier particles inside the atom,He
concluded that the small heavy positively
charged body is present within the atom
and was called nucleus.
The Above diagram shows the Gold foil scattering experiment ⬆
