Septhextrium (Sht)
Septhextrium is the systematic name of the theoretical 763. element in the periodic table with a symbol of Sht and atomic number of 763. Septhextrium, also known as element 763, has septyni šimtai šešiasdešimt trys protons in its nucleus, and septyni šimtai šešiasdešimt trys electrons in its shells.