Ennennunium (Eeu)

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