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    samarium (Sm)

    samarium
    Distilled, crystalline samarium.
    Image copyright: smart-elements.com
    A gray-white metallic element of the lanthanide series, first identified spectroscopically in 1879. Its chief ores are monazite and bastnaesite. Samarium is used in carbon-arc lamps, as a moderator in nuclear reactors, and as a catalyst. Some samarium alloys are used for making powerful permanent magnets. Samarium's most common isotope is 152Sm (26.72%).


    atomic number 62
    relative atomic mass 150.35
    relative density 7.52
    melting point 1,072°C (1,962°F)
    boiling point 3,791°C (3,256°F)


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