Septquadnilium (Sqn)
Septquadnilium is the systematic name of the theoretical ٧٤٠. element in the periodic table with a symbol of Sqn and atomic number of 740. Septquadnilium, also known as element 740, has سبعة مائة وأربعون protons in its nucleus, and سبعة مائة وأربعون electrons in its shells.