Septquadbium (Sqb)
Septquadbium is the systematic name of the theoretical ۷۴۲. element in the periodic table with a symbol of Sqb and atomic number of 742. Septquadbium, also known as element 742, has هفتصد و چهل و دو protons in its nucleus, and هفتصد و چهل و دو electrons in its shells.