Question

How was the nucleus of an atom discovered?

Answer 1

Hint: Detection of the nucleus of an atom was owing to the experiment approved by Rutherford. Rutherford's experiment on scattering of α-particles exhibited for the main period that the atom has nucleus. He experiential that the positively charged α-particles were repelled and repelled by the positive charges in the atom. Rutherford's called this positively charged share of atom as nucleus

Complete step by step answer:
Firstly what is Nucleus :
The atomic nucleus is the small, dense section containing protons and neutrons at the center of an atom, exposed in $$1911$$ by Ernest Rutherford.
Discovery of Nucleus:
In$$1911$$, Lord Ernest Rutherford exposed the nucleus through his gold foil scattering experiment. A tinny gold foil was attacked with positively charged alpha - particles after a radioactive basis of the Alpha-particles passed concluded without any deflection. The point at which Alpha-particles collided with the circular zinc sulphide shelter, a flash of light was specified.
How was the nucleus of an atom exposed? Through means of the definitive gold foil experiment of Marsden, Rutherford, and Geiger, $$1909$$, at the University of Manchester.
Previously this experiment, it was supposed that matter had a desirable pudding structure (see J. J. Thomson: "positive ions in a sea of electrons"). Marsden (below Rutherford's and Geiger's direction) excited alpha particles at a thin gold plate. (FYI, gold is enormously malleable: it can be stricken out to very high surfaces, only a couple of atoms dense as it was in this experiment.)
Maximum of the alpha particles passed straight concluded the plate; some were bounced; a few of the alpha particles recoiled straight back at the generator. This previous result was completely unpredicted given the width of the pieces. In Rutherford's words,
" It was as if you fired a $$15-inch$$ shell at a piece of tissue paper and it emanated back to success you. "

Note:
Rutherford could simply explain this phenomenon by suggesting a central atomic nucleus, which limited all the positive charge, and most of the mass. Therefore activated nuclear age matter collected a central, heavy nuclear atom nearby which electrons circulated.