Pentnilunium (Pnu)

Pentnilunium is the systematic name of the theoretical ที่ 501 element in the periodic table with a symbol of Pnu and atomic number of 501. Pentnilunium, also known as element 501, has ห้า​ร้อย​หนึ่ง protons in its nucleus, and ห้า​ร้อย​หนึ่ง electrons in its shells.