Nucleon is the name for which of the following?
I. Electrons
II. Protons
III. Neutrons
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → II and III
A nucleus is made up of protons and neutrons, and either of these particles is called a nucleon. Electrons are not nucleons, since all the electrons of an atom lie outside the nucleus.
NCERT (2026-27):
Atomic Masses and Composition of Nucleus – “… One also uses the term nucleon for a proton or a neutron. Thus the number of nucleons in an atom is its mass number A.”