Hextrioctium (Hto)

Hextrioctium is the systematic name of the theoretical 638ú element in the periodic table with a symbol of Hto and atomic number of 638. Hextrioctium, also known as element 638, has sé chéad tríocha a hocht protons in its nucleus, and sé chéad tríocha a hocht electrons in its shells.