Septquadnilium (Sqn)
Septquadnilium is the systematic name of the theoretical 740. element in the periodic table with a symbol of Sqn and atomic number of 740. Septquadnilium, also known as element 740, has յոթհարյուր քառասուն protons in its nucleus, and յոթհարյուր քառասուն electrons in its shells.