Septpenthexium (Sph)
Septpenthexium is the systematic name of the theoretical ۷۵۶. element in the periodic table with a symbol of Sph and atomic number of 756. Septpenthexium, also known as element 756, has هفتصد و پنجاه و شش protons in its nucleus, and هفتصد و پنجاه و شش electrons in its shells.