Example image of eyePlorer eyePlorer map for 'Extension of the periodic table beyond the seventh period': Atomic number Chemical element Period (periodic table) Periodic table Atomic orbital Glenn T. Seaborg Unbibium Unbiunium Alpha decay Half-life Island of stability Radioactive decay Unbihexium Quantum mechanics Spin–orbit interaction International Union of Pure and Applied Chemistry Systematic element name Aufbau principle Electron configuration Ion Nuclear shell model Neutron drip line Proton drip line Bohr model Fine-structure constant Untriseptium Speed of light Dirac equation Relativity Klein paradox Richard Feynman University of Kentucky Period 8 element S-block Periodic table (by blocks) Superactinide Periodic table (standard) Lawrencium Alternative periodic tables UPT Unsolved problems in chemistry Electron shell