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jul 1, 1863 - John Newlands' Octaves

Description:

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

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Periodická sústava prvkov

ByMichaela Sekerešová
16 Oct 2017
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Date:

jul 1, 1863
Now
~ 162 years ago
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