Fig. 2
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Discovery of elements along the historical timeline from year 0 to the 21st century. By 2020, all the elements in the table had been discovered (source: Periodic Table app, Royal Society of Chemistry, 2012).
Découverte des éléments au cours de l’histoire, de l’année zéro au 21e siècle. En 2020, tous les éléments du tableau avaient été découverts (source : Periodic Table app, Royal Society of Chemistry, 2012).
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