Septpentoctium (Spo)

Septpentoctium is the systematic name of the theoretical 758:e element in the periodic table with a symbol of Spo and atomic number of 758. Septpentoctium, also known as element 758, has sju­hundra­femtio­åtta protons in its nucleus, and sju­hundra­femtio­åtta electrons in its shells.