The nucleon number of an atom is the total number of
Answer Details
The nucleon number of an atom is the total number of protons and neutrons in the nucleus of an atom. This number represents the atomic mass of the atom and is unique for each element. The number of protons determines the atomic number of an element and therefore its identity, as every element has a unique atomic number. The number of neutrons in an atom can vary, leading to different isotopes of the same element.