Question

Who discovered protons and neutrons?

Answer 1

Hint: let’s first discuss what protons and neutrons are a proton is a subatomic particle, symbol $ p $ or $ {p^ + } $ , with a positive electric charge of $ + 1e $ elementary charge and a mass slightly less than that of a neutron. And the neutron is a subatomic particle, symbol $ n $ or $ {n^o} $ , which has a neutral charge, and a mass slightly greater than that of a proton.

Complete Step By Step Answer:
Protons:
The proton was discovered by Ernest Rutherford in the early $ 1900s $ . During this period, his research resulted in a nuclear reaction which led to the first splitting of the atom, where he discovered protons. He named his discovery protons based on the Greek word protos which means first.
Neutrons:
By $ 1920 $ , physicists knew that most of the mass of the atom was located in a nucleus at its center, and that this central core contained protons. In May $ 1932 $ James Chadwick announced that the core also contained a new uncharged particle, which he called the neutron. Chadwick was born in $ 1891 $ in Manchester, England.

Note:
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom; an atom is composed of a positively-charged nucleus, with a cloud of negatively-charged electrons surrounding it, bound together by electrostatic force. Almost all of the mass of an atom is located in the nucleus, with a very small contribution from the electron cloud. Protons and neutrons are bound together to form a nucleus by the nuclear force.