Septpentennium (Spe)

Septpentennium is the systematic name of the theoretical 759. element in the periodic table with a symbol of Spe and atomic number of 759. Septpentennium, also known as element 759, has syv­hundrede og ni­og­halvtreds protons in its nucleus, and syv­hundrede og ni­og­halvtreds electrons in its shells.