Octpentunium (Opu)

Octpentunium is the systematic name of the theoretical 851. element in the periodic table with a symbol of Opu and atomic number of 851. Octpentunium, also known as element 851, has kahdeksan­sataa­viisi­kymmentä­yksi protons in its nucleus, and kahdeksan­sataa­viisi­kymmentä­yksi electrons in its shells.