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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 jan 1894 ano – 1 jan 1898 ano)

Adicionado na linha do tempo:

tabla periodica

ByFabrizio
2 dias atrás
0
0
17

Data:

1 jan 1894 ano
1 jan 1898 ano
~ 4 years
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