Scientists confirm element 117

This superheavy was produced for the second time — and by a different team of researchers than four years ago — proving that ununseptium is real

By Janet Raloff, 09:32 AM May 13, 2014

The second time’s the charm. For the second time in four years, scientists report creating a new element with 117 protons in its nucleus. That new report confirms element 117’s existence.

Both times, scientists reported making only a small amount. Several atoms. And they lasted for less than a second before breaking apart. But that was enough.

Scientists first claimed to make the element in 2010.The science community wanted to be sure that discovery was real, however, before celebrating its bir...

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