Octsepttrium (Ost)

Octsepttrium is the systematic name of the theoretical 873'inci element in the periodic table with a symbol of Ost and atomic number of 873. Octsepttrium, also known as element 873, has səkkiz yüz yetmiş üç protons in its nucleus, and səkkiz yüz yetmiş üç electrons in its shells.