Octsepttrium (Ost)

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