On line some interesting links to nuclides websites:
To buy a chart of nuclides, choose the one from Karlsruhe Nuclide Chart via https://nuklid.shop/
At the Tabloo Expoo a Nuclide chart was build in "glass" cubes with additional LED lights. The X-Y axes are number of Protons and Neutrons, the vertical axe is Energy. The lower, the cubes, the more stable the isotope is. The lowest of all is iron - Fe.
