Octpentunium (Opu)

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