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Dmitri Mandeleev (16 gen 1869 anni – 25 gen 1869 anni)

Descrizione:

Arranged the elements in order of increasing atomic weight. However, he left gaps for elements that have not been discovered and swapped the order for several eelmentsso that the periodic pattern and their properteis can be seen

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ByButhaina Khalid AlSuwaidi
16 ott 2018
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0
145

Data:

16 gen 1869 anni
25 gen 1869 anni
~ 9 days
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