Neutrons and protons are the two atomic particles are found in the nucleus of an atom. Hence option 1 and 3 is correct.
Atomic particles are defined as a subatomic particle is an atom's constituent. The detection of more than 200 subatomic particles has been made thus far in highly developed particle accelerators.
The nucleus (or core) of an atom is composed of protons and neutrons. An extremely rare hydrogen isotope called tritium has a nucleus made up of one proton and two neutrons. The protons in an atom's nucleus are attracted to the electrons by the electromagnetic force.
Thus, neutrons and protons are the two atomic particles are found in the nucleus of an atom. Hence option 1 and 3 is correct.
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