Penttriunium (Ptu)

Penttriunium is the systematic name of the theoretical 531. element in the periodic table with a symbol of Ptu and atomic number of 531. Penttriunium, also known as element 531, has viisi­sataa­kolme­kymmentä­yksi protons in its nucleus, and viisi­sataa­kolme­kymmentä­yksi electrons in its shells.