Hextriennium (Hte)

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