Septquadennium (Sqe)

Septquadennium is the systematic name of the theoretical 749ste element in the periodic table with a symbol of Sqe and atomic number of 749. Septquadennium, also known as element 749, has sewehonderd nege-en-veertig protons in its nucleus, and sewehonderd nege-en-veertig electrons in its shells.