Ennennunium (Eeu)

Ennennunium is the systematic name of the theoretical 991. element in the periodic table with a symbol of Eeu and atomic number of 991. Ennennunium, also known as element 991, has níggju­hundrað­og­níti­ein protons in its nucleus, and níggju­hundrað­og­níti­ein electrons in its shells.