Pentunoctium (Puo)
Pentunoctium is the systematic name of the theoretical ٥١٨. element in the periodic table with a symbol of Puo and atomic number of 518. Pentunoctium, also known as element 518, has خمسة مائة وثمانية عشر protons in its nucleus, and خمسة مائة وثمانية عشر electrons in its shells.