The official discovery of element-43 is accorded to Emilio Segrè and co-workers. Technetium, as they called it, was the last of elements 1-92 to be tracked down, and in fact it had to be ...

After a breakdown in US-Russia relations, Riken finds itself ahead of its rivals. And Lawrence Berkeley National Laboratory chases element 120 ...

The first gap was eventually filled by element 43, technetium 1, with the second gap being filled by element 75, rhenium. Rhenium was the first of these two new group-7-elements to be discovered ...

Quantitative experiments on the properties of the oxychloride of bohrium, in particular, showed that the element was behaving almost exactly that one would have predicted from its position below ...