Hexennilium (Hen)

Hexennilium is the systematic name of the theoretical ที่ 690 element in the periodic table with a symbol of Hen and atomic number of 690. Hexennilium, also known as element 690, has หก​ร้อย​เก้า​สิบ protons in its nucleus, and หก​ร้อย​เก้า​สิบ electrons in its shells.