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    atomic number 91

    atomic number 91 - 365bet中国官方网站 definition and meaning for word atomic number 91

    Definition
    (noun) a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
    Synonyms : pa , protactinium , protoactinium

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