Pentnilbium (Pnb)

Pentnilbium is the systematic name of the theoretical ٥٠٢. element in the periodic table with a symbol of Pnb and atomic number of 502. Pentnilbium, also known as element 502, has خمسة مائة وإثنان protons in its nucleus, and خمسة مائة وإثنان electrons in its shells.