Europiun by https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg en-us 2017-05-30 08:54:11 UTC 2023-01-30 00:08:05 UTC hello@padlet.com Europium’s story is part of the complex history of the rare earths, aka lanthanoids. It began with cerium which was discovered in 1803. In 1839 Carl Mosander separated two other elements from it: lanthanum and one he called didymium which turned out to be a mixture of two rare earths, praseodymium and neodymium, as revealed by Karl Auer in 1879. Even so, it still harboured another rarer metal, samarium, separated by Paul-Émile Lecoq de Boisbaudran, and even that was impure. In 1886 Jean Charles Galissard de Marignac extracted gadolinium, from it, but that was still not the end of the story. In 1901, Eugène-Anatole Demarçay carried out a painstaking sequence of crystallisations of samarium magnesium nitrate, and separated yet another new element: europium. salvadorgironguerrero https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174367056 2017-05-30 08:54:27 UTC https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174367056 salvadorgironguerrero https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174368085 2017-05-30 09:01:04 UTC https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174368085 Eugène Demarçay was who descovered the europium salvadorgironguerrero https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174369516 2017-05-30 09:09:48 UTC https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174369516 WEBS: salvadorgironguerrero https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174370162 http://www.rsc.org/periodic-table/element/63/europium  pubchem.ncbi.nlm.nih.gov/compound/Europium_oxide#section=/es/translate/
dictionary.cambridge.org/es/translate/]]> 2017-05-30 09:14:06 UTC https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174370162 Molar mass: 351,926 g/mol Formulae: Eu2O3Densidad: 7,4 g/cm³Melting point: 2.350 °C Boiling point : 3.790 °C salvadorgironguerrero https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174371475 2017-05-30 09:24:11 UTC https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174371475 VIDEO: salvadorgironguerrero https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174958870 https://www.youtube.com/watch?v=BaWZLOuKfAM]]> 2017-06-02 11:16:27 UTC https://padlet.com/salvadorgironguerrero/yx8ymw9x7zlg/wish/174958870