Pentquadbium (Pqb)

Pentquadbium is the systematic name of the theoretical 542ú element in the periodic table with a symbol of Pqb and atomic number of 542. Pentquadbium, also known as element 542, has cúig chéad daichead a dó protons in its nucleus, and cúig chéad daichead a dó electrons in its shells.