Hexpentoctium (Hpo)

Hexpentoctium is the systematic name of the theoretical 658. element in the periodic table with a symbol of Hpo and atomic number of 658. Hexpentoctium, also known as element 658, has sechs­hundert­acht­und­fünfzig protons in its nucleus, and sechs­hundert­acht­und­fünfzig electrons in its shells.