Ennseptoctium (Eso)
Ennseptoctium is the systematic name of the theoretical ke-978 element in the periodic table with a symbol of Eso and atomic number of 978. Ennseptoctium, also known as element 978, has sembilan ratus tujuh puluh delapan protons in its nucleus, and sembilan ratus tujuh puluh delapan electrons in its shells.