The “island of stability” actually encompasses many of the superheavy elements that we have already produced. The “stability” part comes from “magic numbers” of neutrons in the isotopes that are theorized to have some kind of stabilizing effect on the nuclear shells.
The difficulty is that we can theorize the number of neutrons we need to stabilize a certain number of protons, but finding atoms with the right number of protons and neutrons to smash together to hopefully create that total number is… difficult. Sometimes those particular isotopes with the proton/neutron quantities required either just plain don’t exist, or are themselves a wholly synthetic isotope with its own set of problems like being insanely slow or difficult to produce, having a crazy short half-life, incompatibility with various acceleration methods, etc.
The “island of stability” actually encompasses many of the superheavy elements that we have already produced. The “stability” part comes from “magic numbers” of neutrons in the isotopes that are theorized to have some kind of stabilizing effect on the nuclear shells.
The difficulty is that we can theorize the number of neutrons we need to stabilize a certain number of protons, but finding atoms with the right number of protons and neutrons to smash together to hopefully create that total number is… difficult. Sometimes those particular isotopes with the proton/neutron quantities required either just plain don’t exist, or are themselves a wholly synthetic isotope with its own set of problems like being insanely slow or difficult to produce, having a crazy short half-life, incompatibility with various acceleration methods, etc.