Septbioctium (Sbo)
Septbioctium is the systematic name of the theoretical 728'inci element in the periodic table with a symbol of Sbo and atomic number of 728. Septbioctium, also known as element 728, has yeddi yüz iyirmi səkkiz protons in its nucleus, and yeddi yüz iyirmi səkkiz electrons in its shells.