Octseptseptium (Oss)
Octseptseptium is the systematic name of the theoretical 877वाँ element in the periodic table with a symbol of Oss and atomic number of 877. Octseptseptium, also known as element 877, has आठ सौ सतहत्तर protons in its nucleus, and आठ सौ सतहत्तर electrons in its shells.