Penttriunium (Ptu)

Penttriunium is the systematic name of the theoretical ที่ 531 element in the periodic table with a symbol of Ptu and atomic number of 531. Penttriunium, also known as element 531, has ห้า​ร้อย​สาม​สิบ​เอ็ด protons in its nucleus, and ห้า​ร้อย​สาม​สิบ​เอ็ด electrons in its shells.