The gold foil experiment led to the discovery of which subatomic particle?

The gold foil experiment led to the discovery of nucleus in an atom

Explanation:

The structure of atom was first given by the plum pudding model of J.J. Thomson before the experiment of Ernest Rutherford. The plum pudding model explained an atom as a positive charge body which contains small negatively charged particles which are called electrons. He also described that the negative charge in atom is balanced with the equal amount of positive charge to maintain the neutrality of atom. But there were some faults in this model of Thomson. He did not give the complete structure of atom which was then given by Rutherford in his Gold Foil Experiment in 1898 which was published in 1911.  

He discovered the concept of nucleus in atom. His research is based on the experiment with alpha particles. Alpha particles are helium atom particles. He did bombardment of positive alpha particles on thin foil of gold approx. 8.6 x 10 -6 centimetres thick and took the observations on the screen of zinc sulphide which was behind the gold foil. He observed the deflection of these bombarded alpha particles on the photographic film

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