Last Updated
：2025/11/20
actinide
IPA(Pronunciation)
（ plural ）
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(inorganic chemistry) Any of the 14 radioactive elements of the periodic table that are positioned under the lanthanides, to which they have similar chemistry.
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actinide
The discovery of a new actinide isotope challenged existing nuclear models.
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The discovery of a new actinide isotope challenged existing nuclear models.
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