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1 jul 1863 año - John Newlands' Octaves

Descripción:

56 dovtedy objavených prvkov klasifikoval do 11 skupín, ktoré boli založené na podobných fyzikálnych vlastnostiach.

Añadido al timeline:

Periodická sústava prvkov

ByMichaela Sekerešová
16 oct 2017
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554

fecha:

1 jul 1863 año
Ahora mismo
~ 162 years ago
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