Octsepttrium (Ost)

Octsepttrium is the systematic name of the theoretical 873e element in the periodic table with a symbol of Ost and atomic number of 873. Octsepttrium, also known as element 873, has acht­honderd­drie­ën­zeventig protons in its nucleus, and acht­honderd­drie­ën­zeventig electrons in its shells.