Hextriennium (Hte)

Hextriennium is the systematic name of the theoretical ٦٣٩. element in the periodic table with a symbol of Hte and atomic number of 639. Hextriennium, also known as element 639, has ستة مائة وتسعة وثلاثون protons in its nucleus, and ستة مائة وتسعة وثلاثون electrons in its shells.