Ennennunium (Eeu)

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