Octbiunium (Obu)

Octbiunium is the systematic name of the theoretical ٨٢١. element in the periodic table with a symbol of Obu and atomic number of 821. Octbiunium, also known as element 821, has ثمانية مائة وواحد وعشرون protons in its nucleus, and ثمانية مائة وواحد وعشرون electrons in its shells.