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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
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Glenn Seaborg (ACTINIDES AND LANTHANIDES) Seaborg was the principal or co-discoverer of ten elements: plutonium, americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium and element 106, which, while he was still living, was named seaborgium in his honor. (1 ene 1940 año – 2 oct 1940 año)

Descripción:

cant attach photo.

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fecha:

1 ene 1940 año
2 oct 1940 año
~ 9 months