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Jean Charles Galissard de Marignac (24 April 1817 – 15 April 1894) was a Swiss chemist whose work with atomic weights suggested the possibility of isotopes and the packing fraction of nuclei. His study of the rare earth elements led to his discovery of ytterbium in 1878 and co-discovery of gadolinium in 1880. [1] [2] [3]
Jean-Charles Galissard de Marignac was a Swiss chemist whose work with atomic weights suggested the possibility of isotopes and the packing fraction of nuclei and whose study of the rare-earth elements led to his discovery of ytterbium in 1878 and codiscovery of gadolinium in 1880.
- The Editors of Encyclopaedia Britannica
Marignac discovered silicotungstic acid in 1862 and was the first to isolate ytterbium (1878). He also codiscovered gadolinium (1880). From: Marignac, Jean Charles Galissard de in A Dictionary of Scientists ». Subjects: Science and technology.
MARIGNAC, JEAN CHARLES GALISSARD DE (b. Geneva, Switzerland, 24 April 1817; d. Geneva, 15 April 1894) inorganic chemistry, physical chemistry. Descended from a distinguished Huguenot family, Marignac was the son of Jacob de Marignac, a judge and conseiller d’état. His mother was the sister of the pharmacist and physiologist Augustin Le Royer ...
Marignac studied in Paris under Dumas and in Giessen at the laboratory of Liebig. In 1841 he became professor at the University of Geneva. He determined atomic weights and worked with rare earths. He his given credit for the discovery of ytterbium and gadolinium.
Sep 22, 2015 · It was the French scientist Jean Charles Galissard de Marignac who first succeeded in separating tantalum from niobium, by exploiting the different solubilities of their fluorinated...
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Jean Charles Galissard de Marignac (April 24, 1817 – April 15, 1894) was a Swiss chemist whose work with atomic weights suggested the possibility of isotopes and the packing fraction of nuclei and whose study of the rare earth elements led to his discovery of ytterbium in 1878 and codiscovery of gadolinium in 1880.
