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 янв 1940 г. – 2 окт 1940 г.)