Septtriunium (Stu)

Septtriunium is the systematic name of the theoretical 731. element in the periodic table with a symbol of Stu and atomic number of 731. Septtriunium, also known as element 731, has յոթ­հարյուր երեսուն­մեկ protons in its nucleus, and յոթ­հարյուր երեսուն­մեկ electrons in its shells.