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It was she who managed to find two new elements, rhenium and masurium, that Dmitri Mendeleev had predicted would form part of the periodic table.

But masurium is now known as technetium, the discovery of which is attributed to Carlo Perrier and Emilio Segre.

The German husband-and-wife team Walter and Ida Noddack claimed to have glimpsed element 43 as part of a nuclear reaction, and named it "masurium" after the Masurian lakes, where Walter was born.

This meant that, in the case of element 43, the Noddacks’ claim for masurium should be dismissed and should be replaced by technetium, as synthesized by Segrè and Perrier.