Pentennilium (Pen)

Pentennilium is the systematic name of the theoretical 590. element in the periodic table with a symbol of Pen and atomic number of 590. Pentennilium, also known as element 590, has viisi­sataa­yhdeksän­kymmentä protons in its nucleus, and viisi­sataa­yhdeksän­kymmentä electrons in its shells.