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 แฎแฃแแแกยญแแชแแยญแแแ แแแแขแ protons in its nucleus, and แฎแฃแแแกยญแแชแแยญแแแ แแแแขแ electrons in its shells.