Nobelium

Nobelium is the actinide element with atomic number 102, reported independently in the late 1950s by teams at Berkeley and at the Nobel Institute of Physics in Stockholm, Sweden, for which it was named. All of its isotopes have half-lives of only tens of seconds to a few minutes, it does not occur in nature, and it can only be produced atom by atom in heavy-ion accelerators. It has no practical uses and serves only as a subject of nuclear-physics research on superheavy elements.

Nobelium compounds have only been studied briefly in single-atom on-line chemistry experiments, in order to confirm its divalent and trivalent chemical behavior; they have never been isolated, weighed, or prepared on any scale, and no nobelium compound has any civilian or industrial application.