Septennennium (See)
Septennennium is the systematic name of the theoretical 799. element in the periodic table with a symbol of See and atomic number of 799. Septennennium, also known as element 799, has எழுநூறு தொண்ணூறு ஒன்பது protons in its nucleus, and எழுநூறு தொண்ணூறு ஒன்பது electrons in its shells.