Carl Gustaf Mosander (1797-1858) was a Swedish chemist and mineralogist known for his contributions to the field of chemistry and his discovery of several rare earth elements. Born in Stockholm, Mosander studied pharmacy and chemistry at the Karolinska Institute before apprenticing under Jöns Jacob Berzelius, one of the leading chemists of his time.
Mosander is best remembered for his work on the separation and identification of the rare earth elements cerium and lanthanum. In 1839, he discovered a new element, which he named erbium, and later he also discovered another element, known as terbium. Moreover, he showed that the supposed single element yttrium, previously isolated by Friedrich Wöhler, was actually comprised of three distinct substances, which he named yttrium, terbium, and erbium.
Mosander's research significantly expanded our understanding of the rare earth elements and their properties, paving the way for further exploration in the field. His meticulous experimental work and dedication to the study of these elements helped in isolating and characterizing various rare earth compounds, leading to advancements in both chemistry and mineralogy.
Carl Gustaf Mosander's contributions have had a lasting impact on the field of chemistry, and his discoveries continue to be studied and utilized in various scientific and technological applications, such as catalysis, lighting, and the development of advanced materials.
