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 sjey­hundrað­og­fimmti­níggju protons in its nucleus, and sjey­hundrað­og­fimmti­níggju electrons in its shells.