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1894–1898 – William Ramsay Aporte: Descubrió los gases nobles (neón, argón, kriptón, xenón). Explicación: Estos no reaccionaban con otros elementos, lo que llevó a añadir una nueva columna a la tabla. (1 gen 1894 anni – 1 gen 1898 anni)

Aggiunto al nastro di tempo:

tabla periodica

ByFabrizio
1 giorni fa
0
0
17

Data:

1 gen 1894 anni
1 gen 1898 anni
~ 4 years
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