Octseptseptium (Oss)

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