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actinium

C2 noun

actinium /ækˈtɪniəm/ nghĩa là actini

Các nghĩa

  1. actini

    A radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores.

    uncountable · usually

    Actinium melts at 1,051°C.

    Actinium is a silvery metal.

    Actinium is a radioactive element.

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