Pentquadennium (Pqe)

Pentquadennium is the systematic name of the theoretical ٥٤٩. element in the periodic table with a symbol of Pqe and atomic number of 549. Pentquadennium, also known as element 549, has خمسة مائة وتسعة وأربعون protons in its nucleus, and خمسة مائة وتسعة وأربعون electrons in its shells.