Septquadennium (Sqe)

Septquadennium is the systematic name of the theoretical 749'инчи element in the periodic table with a symbol of Sqe and atomic number of 749. Septquadennium, also known as element 749, has жети жүз кырк тогуз protons in its nucleus, and жети жүз кырк тогуз electrons in its shells.