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Japanese Scientists Produce Element 113
Third Position writes "The most unambiguous data to date on the elusive 113th atomic element has been obtained by researchers at the RIKEN Nishina Center for Accelerator-based Science (RNC). A chain of six consecutive alpha decays, produced in experiments at the RIKEN Radioisotope Beam Factory (RIBF), conclusively identifies the element through connections to well-known daughter nuclides. The search for superheavy elements is a difficult and painstaking process. Such elements do not occur in nature and must be produced through experiments involving nuclear reactors or particle accelerators, via processes of nuclear fusion or neutron absorption. Since the first such element was discovered in 1940, the United States, Russia and Germany have competed to synthesize more of them. Elements 93 to 103 were discovered by the Americans, elements 104 to 106 by the Russians and the Americans, elements 107 to 112 by the Germans, and the two most recently named elements, 114 and 116, by cooperative work of the Russians and Americans. With their latest findings, associate chief scientist Kosuke Morita and his team at the RNC are set follow in these footsteps and make Japan the first country in Asia to name an atomic element."
...Ununtrium! Like all of the elements in that range that haven't been sufficiently studied yet. Great job naming it, Japan.
But for those curious, it's a toss-up between "Japonium," "Rikenium," and "Becquerelium". (Some Russians were involved and felt that the French physicist Henri Becquerel was under appreciated.)
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No practical uses apart from scientific, as all isotopes of these superheavy elements have short half-lifes (mostly in the ms to a few seconds range). So it's impossible to put significant amounts of such an element together.
But if the "island of stability" theory holds true, we might see some larger amounts of yet-to-be-produced elements. Which might have practical applications (but probably extremely expensive to produce).
An island of stability has been observed, but so far it looks like "most stable" means half-life of a few tens of seconds instead of sub-seconds.
Also, the density will depend on the chemistry a lot, and not just increase with higher atomic mass in every case. You can look at the density of transuranic elements, and see that elements 95-99 are about 25-50% lighter than 92-94. Might be a while before a 100 kg golfball, since that would be 125 times denser than uranium. Although you can get a 0.9 kg osmium golf ball now, and that would be pretty damn heavy as is.
So far the island of stability theory is holding true (with maybe a little updating on what is the best number of nucleons in a nucleus). It doesn't necessary mean the elements will be stable, just more stable... which so far means half-life of seconds.