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8 gen 1940 anni - 1940 – Glenn T. Seaborg Aporte: Descubrió y organizó los elementos transuránicos (más allá del uranio, como el plutonio). Explicación: Propuso separar los lantánidos y actínidos en filas inferiores.

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8 gen 1940 anni
Adesso
~ 85 years ago
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