have been made to rehabilitate the Noddacks' claims, but they are disproved by Paul Kuroda's study on the amount of technetium that could have been present in the ores they studied: it could not have exceeded of ore, and thus would have been undetectable by the Noddacks' methods.

Official discovery and later history

The discovery of element 43 was finally confirmed in a 1937 experiment at the University of Palermo

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