Octbinilium (Obn)
Octbinilium is the systematic name of the theoretical ٨٢٠. element in the periodic table with a symbol of Obn and atomic number of 820. Octbinilium, also known as element 820, has ثمانية مائة وعشرون protons in its nucleus, and ثمانية مائة وعشرون electrons in its shells.