Hexnilennium (Hne)
Hexnilennium is the systematic name of the theoretical thứ 609 element in the periodic table with a symbol of Hne and atomic number of 609. Hexnilennium, also known as element 609, has sáu trăm lẻ chín protons in its nucleus, and sáu trăm lẻ chín electrons in its shells.