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 յոթ­հարյուր իննասուն­ինը protons in its nucleus, and յոթ­հարյուր իննասուն­ինը electrons in its shells.