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The Early Periodic Table:
Early versions of the periodic table failed, mainly because they didn't
take into account that not all the elements had been found.
John Dalton arranged elements by their masses.
John Newlands said that every eighth element had similar
He arranged them in octaves, but ignored the fact that not all
elements had been discovered.
Alexandre-Emile Beguyer de Chancourtis had done the same
sort of thing a year earlier.…read more


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