Octpentnilium (Opn)

Octpentnilium is the systematic name of the theoretical 850. element in the periodic table with a symbol of Opn and atomic number of 850. Octpentnilium, also known as element 850, has kahdeksan­sataa­viisi­kymmentä protons in its nucleus, and kahdeksan­sataa­viisi­kymmentä electrons in its shells.