Pentnilbium (Pnb)

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