Adapted from an image (public domain), via Wikimedia Commons.
1817–1894
Jean Charles Galissard de Marignac
Discovered gadolinium (1880) and ytterbium (1878).
Elements
70YbYtterbium
1878
In 1878 Jean Charles Galissard de Marignac, in Geneva, heated erbium nitrate and found two oxides in the residue: red erbium oxide and a white one. The white one was a new element, which he named ytterbium, after Ytterby.
64GdGadolinium
1880
In 1880 Jean Charles Galissard de Marignac, in Geneva, separated a new rare earth from didymium. It was named gadolinium, after the mineral gadolinite and so after Johan Gadolin.
Keep exploring
Where the dates and stories on this page come from; each event on the timeline links to its own source.
- Jean Charles Galissard de MarignacEncyclopaedia Britannica
- YtterbiumRoyal Society of Chemistry
- GadoliniumRoyal Society of Chemistry
- Jean Charles Galissard de MarignacWikipedia