• word of the day

    atomic number 69

    atomic number 69 - Dictionary definition and meaning for word atomic number 69

    Definition
    (noun) a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
    Synonyms : thulium , tm

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