Georges Urbain was a French chemist born on April 18, 1872, in Paris. He is best known for his discovery of the element lutetium in 1907, which was the last naturally occurring rare earth element to be isolated. Urbain's work contributed significantly to the field of chemistry and the understanding of the periodic table. In addition to his discovery of lutetium, Urbain was involved in various scientific endeavors throughout his career. He published numerous papers and was a member of several scientific societies, including the French Academy of Sciences. His contributions helped advance the study of rare earth elements and their applications.