Septennoctium (Seo)

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