Sensium is a chemical element with the symbol Su. And is atomic number 107.7. It is a metal in the transition metal family. It was first discovered in 2016 near Boring Oregon. It is radioactive and toxic towards life forms. However its discovery uncovered a enormous cave filled with Greenstoneite, or O2,C,Si,Su4 abundant in Sensium. Its current price $201.39 per gram.