Octpentnilium (Opn)
Octpentnilium is the systematic name of the theoretical 850. element in the periodic table with a symbol of Opn and atomic number of 850. Octpentnilium, also known as element 850, has எண்நூறு ஐம்பது protons in its nucleus, and எண்நூறு ஐம்பது electrons in its shells.