Copernicium

Atomic number              112

Atomic mass                  276.8 g.mol ^-1

Isotopes                        1

Discovered by               S. Hofmann, V. Ninov and F.P. Hessbuger in 1996

From its position in the periodic table, in group 12 below mercury, this element should have the physical properties of a heavy metal and, were it long-enough lived, it should be possible for it to have two kind of chemistry, corresponding to oxidation states M(I) and M(II), with the latter more unstable. Following periodic trends, it is expected to be a liquid metal more volatile that mercury.