Octseptseptium (Oss)
Octseptseptium is the systematic name of the theoretical 877º element in the periodic table with a symbol of Oss and atomic number of 877. Octseptseptium, also known as element 877, has oitocentos e setenta e sete protons in its nucleus, and oitocentos e setenta e sete electrons in its shells.