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Plutonium is a radioactive metal element (symbol Pu) that is silvery-gray in appearance and reacts readily with various chemicals, becoming hazardous when exposed to moist air as it expands and forms flammable powder. It is dangerous to handle because it is radioactive and can accumulate in bones, posing serious health risks to humans.
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プルトニウム(英・羅: Plutonium 英語: [pluːˈtoʊniəm])は、原子番号94の元素である。元素記号は Pu。アクチノイド元素の一つ。
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).
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