Septquadennium (Sqe)

Septquadennium is the systematic name of the theoretical 749'inci element in the periodic table with a symbol of Sqe and atomic number of 749. Septquadennium, also known as element 749, has yeddi yüz qırx doqquz protons in its nucleus, and yeddi yüz qırx doqquz electrons in its shells.