Pentnilbium (Pnb)

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