• word of the day

    atomic number 72

    atomic number 72 - Dictionary definition and meaning for word atomic number 72

    Definition
    (noun) a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
    Synonyms : hafnium , hf

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