How are you calculating the atomic masses of the isotopes? I just looked them up, and calculate that the La has the highest binding energy, as expected for the most stable.jjson775 said:
At https://onlinelibrary.wiley.com/doi/pdf/10.1002/9783527618798.app2 it is given as 138.9089322.jjson775 said:
Isobar binding energy is the amount of energy required to break apart an isobar, which is a group of atoms with the same number of nucleons (protons and neutrons) but different atomic numbers. It is a measure of the stability of an isobar.
The isobar binding energy contributes to the overall mass of an atom. When an isobar is broken apart, the energy released or absorbed affects the mass of the atoms involved. This is known as the mass defect and is accounted for in the atomic mass of elements.
The main factors that affect isobar binding energy are the number of protons and neutrons in an isobar, as well as the nuclear forces between these particles. The stronger the nuclear forces, the higher the isobar binding energy and the more stable the isobar.
Isobar binding energy is typically measured in units of MeV (mega electron volts). This measurement is obtained through experiments involving nuclear reactions, such as nuclear fission or fusion, which release or absorb energy and can be used to calculate the isobar binding energy.
Isobar binding energy is important because it helps explain the stability of atoms and the behavior of nuclear reactions. It also plays a crucial role in nuclear energy production and in understanding the structure and properties of atomic nuclei.