Septennoctium (Seo)
Septennoctium is the systematic name of the theoretical 798. element in the periodic table with a symbol of Seo and atomic number of 798. Septennoctium, also known as element 798, has seitsemänsataayhdeksänkymmentäkahdeksan protons in its nucleus, and seitsemänsataayhdeksänkymmentäkahdeksan electrons in its shells.