File:Periodisches System der Elemente (1904-1945, now Gdansk University of Technology).jpg
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Summary
| Description |
Polski: Periodisches System der Elemente (1904-1945, obecnie Politechnika Gdańska, Audytorium Chemiczne). Zwraca uwagę brak pierwiastków: 84 polonu Po (choć odkrytego wiele lat wcześniej przez polską badaczkę Marię Skłodowska-Curie w 1898), 85 astatu At (1940, w Berkeley), 87 fransu Fr (1939, we Francji), 93 neptunu Np (1940, w Berkeley) i dalszych aktynowców i lantanowców. Stare symbole: 18 argon Ar (tu: A), 43 technet Tc (Ma, masurium, Niemcy 1925, odkrycie to odrzucono, i finalnie potwierdzono istnienie pierwiastka po eksperymentach zespołu włoskiego w 1937, Palermo), 54 ksenon Xe (X), 86 radon, Rn (Em, emanation).
English: Periodisches System der Elemente (1904-1945, now at the Gdansk University of Technology): lack of elements: 84 polonium Po (though discovered as early as in 1898 by Maria Sklodowska-Curie), 85 astatine At (1940, in Berkeley), 87 francium Fr (1939, in France), 93 neptunium Np (1940, in Berkeley) and other actinides and lanthanides. Old symbols for: 18 argon Ar (here: A), 43 technetium Tc (Ma, masurium, 1925, dismissed as an error and finally confirmed in 1937, Palermo), 54 xenon Xe (X), 86 radon, Rn (Em, emanation). |
| Date | |
| Source | Own work |
| Author | LukaszKatlewa |
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| current | 00:47, 14 September 2021 | | 5,184 × 3,888 (6.66 MB) | wikimediacommons>Ubcule | Brightness, contrast, saturation |
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