Penttrioctium (Pto)

Penttrioctium is the systematic name of the theoretical 538-ші element in the periodic table with a symbol of Pto and atomic number of 538. Penttrioctium, also known as element 538, has бес жүз отыз сегіз protons in its nucleus, and бес жүз отыз сегіз electrons in its shells.