Ennseptunium (Esu)

Ennseptunium is the systematic name of the theoretical 971e element in the periodic table with a symbol of Esu and atomic number of 971. Ennseptunium, also known as element 971, has negen­honderd­een­en­zeventig protons in its nucleus, and negen­honderd­een­en­zeventig electrons in its shells.