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    atomic number 21

    atomic number 21 - 365bet中国官方网站 definition and meaning for word atomic number 21

    Definition
    (noun) a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite
    Synonyms : sc , scandium

  • Word used in video below:
    text: atomic element number 101 ends in iam
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