Ennseptseptium (Ess)
Ennseptseptium is the systematic name of the theoretical thứ 977 element in the periodic table with a symbol of Ess and atomic number of 977. Ennseptseptium, also known as element 977, has chín trăm bảy mươi bảy protons in its nucleus, and chín trăm bảy mươi bảy electrons in its shells.