George Charles de Hevesy was a Hungarian radiochemist and Nobel Prize in Chemistry laureate, recognized in 1943 for his key role in the development of radioactive tracers to study chemical processes such as in the metabolism of animals. He also co-discovered the element hafnium. The Nobel Prize in Chemistry 1943, announced November 9, 1944. George de Hevesy, “for his work on the use of isotopes as tracers in the study of chemical processes”. George de Hevesy: born 1885, Budapest, Austria-Hungary (now Hungary). Wiki link Data: the Nobel Foundation (CC0).