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 எண்நூறு எழுபது மூன்று protons in its nucleus, and எண்நூறு எழுபது மூன்று electrons in its shells.