Hextrioctium (Hto)

Hextrioctium is the systematic name of the theoretical 638. element in the periodic table with a symbol of Hto and atomic number of 638. Hextrioctium, also known as element 638, has seks­hundrede og otte­og­tredive protons in its nucleus, and seks­hundrede og otte­og­tredive electrons in its shells.