Hextriennium (Hte)

Hextriennium is the systematic name of the theoretical ที่ 639 element in the periodic table with a symbol of Hte and atomic number of 639. Hextriennium, also known as element 639, has หก​ร้อย​สาม​สิบ​เก้า protons in its nucleus, and หก​ร้อย​สาม​สิบ​เก้า electrons in its shells.