The
total mass-energy of a body can be expressed as the sum of many terms corresponding to the energy of all the conceivable interactions and components (as fraction of the total):
-rest mass ( @ 1)
-nuclear binding energy
(@ 8×10-3
)
-mass difference between neutron and proton ( @ 8×10-4 (A-Z)/A )
-electrostatic energy of repulsion in the nuclei (@ 6×10-4 Z2 A-4/3 )
-mass of electrons (@ 5×10-4 Z)
-antiparticles (@ 10-7
)
-weak interactions responsible for b decay (@ 10-11 )