Septpentoctium (Spo)
Septpentoctium is the systematic name of the theoretical ۷۵۸. element in the periodic table with a symbol of Spo and atomic number of 758. Septpentoctium, also known as element 758, has هفتصد و پنجاه و هشت protons in its nucleus, and هفتصد و پنجاه و هشت electrons in its shells.