Unennoctium (Ueo)

Unennoctium is the systematic name of the theoretical ١٩٨. element in the periodic table with a symbol of Ueo and atomic number of 198. Unennoctium, also known as element 198, has مائة وثمانية وتسعون protons in its nucleus, and مائة وثمانية وتسعون electrons in its shells.