Pentnilennium (Pne)

Pentnilennium is the systematic name of the theoretical ٥٠٩. element in the periodic table with a symbol of Pne and atomic number of 509. Pentnilennium, also known as element 509, has خمسة مائة وتسعة protons in its nucleus, and خمسة مائة وتسعة electrons in its shells.