Octseptnilium (Osn)
Octseptnilium is the systematic name of the theoretical ที่ 870 element in the periodic table with a symbol of Osn and atomic number of 870. Octseptnilium, also known as element 870, has แปดร้อยเจ็ดสิบ protons in its nucleus, and แปดร้อยเจ็ดสิบ electrons in its shells.