Paul Émile Lecoq de Boisbaudran

Boisbaudran, Paul Émile Lecoq de (pôl āmēlˈ ləkôkˈ də bwäbōdräNˈ) [key], 1838–1912, French discoverer of the elements gallium, samarium, and dysprosium. He also made contributions in the field of spectroscopy, including his experimentation with the rare-earth metals.

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