Jean Charles Galissard de Marignac

<p>Jean Charles Galissard de Marignac (24 April 1817 – 15 April 1894) was a Swiss chemist whose work with <a href="/facts/Atomic_weight/A3vbuz2n">atomic weights</a> suggested the possibility of <a href="/facts/Isotope/KD9B1y6o">isotopes</a> and the <a href="/facts/Mass_(mass_spectrometry)/ysMBbU1S">packing fraction</a> of <a href="/facts/Atomic_nucleus/orpIm5Xl">nuclei</a>.  His study of the <a href="/facts/Rare_earth_elements/PQSUQumk">rare earth elements</a> led to his discovery of <a href="/facts/Ytterbium/3lerM9uf">ytterbium</a> in 1878 and co-discovery of <a href="/facts/Gadolinium/eLYUeScu">gadolinium</a> in 1880.
</p><p>He was considered "one of the great chemists of the nineteenth century", particularly in the area of <a href="/facts/Inorganic_chemistry/ErD6ypnb">inorganic chemistry</a>.
On 13 September 2011, the site of his laboratory at the <a href="/facts/University_of_Geneva/qXnRaoK5">University of Geneva</a> was designated a historical chemical landmark of Switzerland.
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Jean Charles Galissard de Marignac open-in-new

Jean Charles Galissard de Marignac