Octseptseptium (Oss)

Octseptseptium is the systematic name of the theoretical 877ú element in the periodic table with a symbol of Oss and atomic number of 877. Octseptseptium, also known as element 877, has ocht gcéad seachtó a seacht protons in its nucleus, and ocht gcéad seachtó a seacht electrons in its shells.