신고사유
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It is a chemical element with the symbol Ac and atomic number 89. A soft, silvery-white radioactive metal, actinium reacts rapidly with oxygen and moisture in air forming a white coating of actinium oxide that prevents further oxidation. A trivalent radioactive element and the prototypical member of the actinide family.Owing to its strong radioactivity, actinium glows in the dark with a pale blue light, which originates from the surrounding air ionized by the emitted energetic particles.
Storage Conditions:
Airtight sealed, avoid light and keep dry at room temperature.
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