Unennennium (Uee)

Unennennium is the systematic name of the theoretical ١٩٩. element in the periodic table with a symbol of Uee and atomic number of 199. Unennennium, also known as element 199, has مائة وتسعة وتسعون protons in its nucleus, and مائة وتسعة وتسعون electrons in its shells.