Pentquadennium (Pqe)

Pentquadennium is the systematic name of the theoretical 549a element in the periodic table with a symbol of Pqe and atomic number of 549. Pentquadennium, also known as element 549, has cinci sute patruzeci şi nouă protons in its nucleus, and cinci sute patruzeci şi nouă electrons in its shells.