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1 gen 1923 anni - Hf

Descrizione:

Гафний
открыли Дирк Костер и Дьёрдь де Хевеши

Aggiunto al nastro di tempo:

Chemical timeline

ByМаргарита

12 nov 2018

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550

Data:

1 gen 1923 anni

Adesso

~ 102 years ago

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