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 Jan 1940 Jahr – 2 Okt 1940 Jahr)

cant attach photo.

9 Mon. zuvor

1 Jan 1940 Jahr

2 Okt 1940 Jahr

~ 9 months

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