Pentennilium (Pen)

Pentennilium is the systematic name of the theoretical ที่ 590 element in the periodic table with a symbol of Pen and atomic number of 590. Pentennilium, also known as element 590, has ห้า​ร้อย​เก้า​สิบ protons in its nucleus, and ห้า​ร้อย​เก้า​สิบ electrons in its shells.