Octunseptium (Ous)

Octunseptium is the systematic name of the theoretical 817. element in the periodic table with a symbol of Ous and atomic number of 817. Octunseptium, also known as element 817, has kahdeksan­sataa­seitsemäntoista protons in its nucleus, and kahdeksan­sataa­seitsemäntoista electrons in its shells.