Mastodawn

Europium: atomic number: 63; weight: 151.964; Lanthanide, rare earth; discovery: 1890-1901—LPaul-Émile Lecoq de Boisbaudran, Eugène-Anatole Demarçay #Poetry #Science #History #Europium (https://sharpgiving.com/thebookofscience/items/e063.html)

Europium: atomic number: 63; weight: 151.964; Lanthanide, rare earth; discovery: 1890-1901—LPaul-Émile Lecoq de Boisbaudran, Eugène-Anatole Demarçay