Hexquadennium (Hqe)
Hexquadennium is the systematic name of the theoretical 649. element in the periodic table with a symbol of Hqe and atomic number of 649. Hexquadennium, also known as element 649, has שש מאות ארבעים ותשע protons in its nucleus, and שש מאות ארבעים ותשע electrons in its shells.