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15 gen 1894 anni - Sir William Ramsay and Lord Rayleigh discovered the noble gases and they were added to the periodic table as group O.
Aggiunto al nastro di tempo:
History of the Periodic Table
By
lily heavner
3 ott 2017
0
0
432
Data:
15 gen 1894 anni
Adesso
~ 130 years ago
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