Ennennunium (Eeu)

Ennennunium is the systematic name of the theoretical ٩٩١. element in the periodic table with a symbol of Eeu and atomic number of 991. Ennennunium, also known as element 991, has تسعة مائة وواحد وتسعون protons in its nucleus, and تسعة مائة وواحد وتسعون electrons in its shells.