Paul-Émile Lecoq de Boisbaudran
Paul-Émile Lecoq de Boisbaudran, also called François Lecoq de Boisbaudran, was a French chemist known for his discoveries of the chemical elements gallium, samarium and dysprosium. He developed methods for separation and purification of the rare earth elements and was one of the pioneers of the science of spectroscopy.
Samarium
Gallium
Spectre electrique du Chlorure de Gallium, 1877
Dysprosium
Gallium is a chemical element; it has symbol Ga and atomic number 31. Discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in 1875, gallium is in group 13 of the periodic table and is similar to the other metals of the group.
Gallium
Crystallization of gallium from the melt
99.9999% (6N) gallium sealed in vacuum ampoule
Bauxite mine in Jamaica (1984)