Example image of eyePlorer eyePlorer map for 'Actinium': Atomic number Chemical element Primordial element Polonium Radium Radon Actinoid Lawrencium Periodic table André-Louis Debierne Thorium Titanium Uraninite Friedrich Oskar Giesel Lanthanum Radioactive decay Lanthanoid Dmitri Mendeleev Glenn T. Seaborg Isotope Day Half-life Hour Radionuclide Year Alpha decay Electron capture Nuclear isomer Atomic mass unit Atomic weight Beta particle Uranium Decay chain Isotopes of lead Plutonium-239 Uranium-235 Bismuth Neptunium Neutron source Linear particle accelerator St George Hospital, Sydney Francium Isotopes of actinium Isotopes of bismuth Precious metal Acetyl Group 3 element Marguerite Perey 1899 in science Isotopes of francium