Swedish German chemist who discovered oxygen
According to Wikipedia,
Carl Wilhelm Scheele was a Swedish German pharmaceutical chemist. Scheele discovered oxygen , and identified molybdenum, tungsten, barium, hydrogen, and chlorine, among others. Scheele discovered organic acids tartaric, oxalic, uric, lactic, and citric, as well as hydrofluoric, hydrocyanic, and arsenic acids. He preferred speaking German to Swedish his whole life, as German was commonly spoken among Swedish pharmacists.
Carl Wilhelm Scheele is affiliated with the following schools: