GENERAL KNOWLEDGE

Detailed explanation-1: -Thomson proposed his atomic model saying that the negatively charged electrons are embedded in a sphere of positive charge. He is the one who discovered the negatively charged particle called the electron in the cathode ray experiment.

Detailed explanation-2: -Discovery of the electron Thomson in 1897 was the first to suggest that one of the fundamental units of the atom was more than 1, 000 times smaller than an atom, suggesting the subatomic particle now known as the electron. Thomson discovered this through his explorations on the properties of cathode rays.

Detailed explanation-3: -Protons were discovered by Rutherford and not Thomson.