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    atomic number 57

    atomic number 57 - 365bet中国官方网站 definition and meaning for word atomic number 57

    Definition
    (noun) a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
    Synonyms : la , lanthanum

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