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[en]
In 1945, B. B. Cunningham obtained the first bulk chemical compound of a transplutonium element, namely americium hydroxide.
Korean
[ko]
1945년에, B. B. 커닝햄이 첫 초플루토늄족 원소 화합물을 발견했고, 수산화아메리슘으로 명칭하였다.
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