Question

protons provide positive charge and electrons provide negetive charge then what is the function of neutrons and how was their presence discovered?

Answer 1

Hi,

The disparity found between the atomic number of an atom and its atomic mass could be explained by the existence of a neutrally charged particle within the atomic nucleus. By performing a series of experiments, Chadwick discovered the existence of neutrons( neutral charged particles which has mass) in 1932.