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Lesson Summary. The atomic mass unit (AMU) is used by scientists to describe the mass of atoms. If you want to convert a mass in grams to AMU, all you need to do is divide by 1.660599 x 10^-24 g/AMU. To unlock this lesson you must be a Study.com Member. Create your account.
The term nucleon refers to the particles found in the nucleus of an atom, namely protons and neutrons. A single hydrogen atom (one proton plus one electron) has a mass of 1.007825 amu.A single neutron has a mass of 1.008665 amu. Note that amu stands for atomic mass unit and is sometimes abbreviated with the symbol u.he total mass of the individual nucleons in an atom is always greater than the actual measured mass of the atom. The difference is called the mass defect. The mass defect of an atom corresponds to an amount of energy called the binding energy.