Question

The nuclear particles which are assumed to hold the nucleons together are-
A. Electrons
B. Neutrons
C. Positrons
D. Mesons

Answer 1

As we know Dalton explained a lot of things about matter and its chemical reaction in his Dalton theory. The electron is one of the main and important types of particles that make up atoms. The other two types of partial are protons and neutrons. Protons and neutrons consist of smaller particles but electrons are fundamental particles which do not consist of smaller particles.

Complete answer:
Electrons are very small particles. The mass of an electron particle is only about 1/2000 the mass of neutrons and protons.
Electrons particles have an electric charge of negative 1 (-1) which is equal but opposite to the charge of a proton, which is plus 1 (+1). The number of electrons and protons in all atoms are the same. so, the positive and negative charges of both particles "cancel out", making atoms neutral.
A proton is the main particle that makes up the atom. Protons particles are always present in the nucleus of the atom. Protons have a positively charged particle, of plus 1 (+1).
Neutrons are electrically neutral.It has no charge like proton and electron. The mass of a neutron particle is slightly greater than the mass of a proton particle.
J. J. Thomson is a man who discovered the electron in 1897 during the study of cathode ray, proton is discovered by Ernest Rutherford and the neutron particles was discovered by James Chadwick in May 1932, which is neutral in charged
Any class of individual particles that are a subclass of the hadrons. According to current quark theory, we conclude mesons consist of quark-antiquark pairs. quark is a type of elementary particle and a fundamental constituent of matter. Quarks combine to create composite particles called hadrons, and the most stable of which are neutrons and protons, the components of atomic nuclei.
Thus, the nuclear particles which are assumed to hold the nucleons together are Mesons.

Therefore, option (D) is the correct answer.

Note:
So, remember that, Nuclear particles always responsible for holding all nucleons together are mesons. Kemmer suggested the existence of a neutral meson to account for the binding forces between like particles such as proton particles and proton particles or neutron particles and neutrons.