Element 110, darmstadtium, is a synthetic element that is not present
in the environment at all. Further information on element 110 is here
(outside WebElements) and in a press release (outside WebElements). The interested
reader should consult the on-line version of The Wonderful World of Atoms and Nuclei for a
fascinating insight into research on "super-heavy" atoms.
Chemically, darmstadtium is in the same Group as nickel, palladium, and
platinum (Group 10). Unlike these lighter atoms, darmstadtium decays after
a small fraction of a thousandth of a second into lighter elements by
emitting a-particles which are the nuclei
of helium atoms.
Here is a brief summary of the isolation
Only a few atoms of darmstadtium have ever been made, initially through
a nuclear reaction involving fusion of an isotope of lead, Pb, with one of
208Pb + 62Ni 269Ds +
Isolation of an observable quantity has never been achieved, and may
well never be. This is because atoms of the element decompose through the
emission of a-particles with a half life of
only about 270 microseconds. Another isotope was made by using a different
isotope of nickel.