• word of the day

    atomic number 90

    atomic number 90 - Dictionary definition and meaning for word atomic number 90

    Definition
    (noun) a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
    Synonyms : th , thorium

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