Septpentennium (Spe)

Septpentennium is the systematic name of the theoretical 759ste element in the periodic table with a symbol of Spe and atomic number of 759. Septpentennium, also known as element 759, has sewehonderd nege-en-vyftig protons in its nucleus, and sewehonderd nege-en-vyftig electrons in its shells.