Septpentennium (Spe)

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