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20th century scientists found why properties of elements reoccur periodically (11 ore 55 min, 1 gen 1900 anni – 14 ore 57 min, 31 dic 1999 anni)

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History of the Periodic Table

BySonya Callendar

26 dic 2017

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0

684

Data:

11 ore 55 min, 1 gen 1900 anni

14 ore 57 min, 31 dic 1999 anni

~ 100 years

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