Trisepttrium (Tst)

Trisepttrium is the systematic name of the theoretical 373e element in the periodic table with a symbol of Tst and atomic number of 373. Trisepttrium, also known as element 373, has drie­honderd­drie­ën­zeventig protons in its nucleus, and drie­honderd­drie­ën­zeventig electrons in its shells.