Septnilennium (Sne)

Septnilennium is the systematic name of the theoretical 709. element in the periodic table with a symbol of Sne and atomic number of 709. Septnilennium, also known as element 709, has յոթ­հարյուր ինը protons in its nucleus, and յոթ­հարյուր ինը electrons in its shells.