Atomic number: 111
Year discovered: 1994
Discovered by: Sigurd Hofmann, Victor Ninov, F. P. Hessberger, P. Armbruster, H. Folger, G. Münzenberg, H. J. Schött, and others; at Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, Germany.
- Element 111 was discovered towards the end of 1994 one month after the discovery of element 110 at the GSI in Darmstadt, Germany.
- Three atoms of an isotope 272 Uuu were produced in reactions between 209 Bi targets and 64 Ni projectiles.
- To achieve this, the nickel atoms were accelerated to high energies by the heavy ion accelerator UNILAC at GSI and directed onto a lead target.
- Chemically, element 111 should be in the same group as the elements copper, silver, and gold (Group 11).
- See ununnilium (Uub), Atomic Number 112, for further data.
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Information about other elements may be seen at this Chemical Elements List.
A special unit about words that include chemo-, chem- may be seen here.