NEUTRONS

In 1932, J. Chadwick discovered another subatomic particle which had no charge and a mass nearly equal to that of a proton. It was eventually named as neutron. Neutrons are present in the nucleus of all atoms, except hydrogen. In general, a neutron is represented as ā€˜nā€™. The mass of an atom is therefore given by the sum of the masses of protons and neutrons present in the nucleus.

J. Chadwick

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