Ennseptoctium (Eso)
Ennseptoctium is the systematic name of the theoretical 978. element in the periodic table with a symbol of Eso and atomic number of 978. Ennseptoctium, also known as element 978, has девʼятсот сімдесят вісім protons in its nucleus, and девʼятсот сімдесят вісім electrons in its shells.