Comment on Is the periodic table still getting new additions?
BartyDeCanter@lemmy.sdf.org 2 days agoTo expand on this, there aren’t any gaps left so the only new ones will be increasingly heavyweight and have vanishingly short half-lives, which means that they are increasingly difficult to synthesize and detect. In theory there is an island of stability once we can synthesize sufficiently heavy elements, but it seems pretty far off.
Bags@piefed.social 2 days ago
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, etc.