manganese definition

  • noun:
    • A gray-white or silvery brittle metallic factor, occurring in a number of allotropic kinds, discovered globally, especially in the ores pyrolusite and rhodochrosite plus in nodules from the sea flooring. It is alloyed with metal to boost strength, stiffness, wear opposition, along with other properties along with other metals to form very ferromagnetic products. Atomic quantity 25; atomic body weight 54.9380; melting point 1,244°C; boiling point 1,962°C; specific gravity 7.21 to 7.44; valence 1, 2, 3, 4, 6, 7. See dining table at element.
    • A metallic substance factor (symbol Mn) with an atomic quantity of 25.
    • An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty (melting point 1244° C), but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol Mn. Atomic number 25; Atomic weight 54.938 [C=12.011].
    • Chemical icon, Mn; atomic body weight, 55. A metal having a remarkable affinity for, and in some respects a detailed resemblance to, metal, which it's an exceptionally frequent associate.
    • a difficult brittle gray polyvalent metallic factor that resembles metal it is perhaps not magnetic; utilized in making steel; happens in a lot of minerals

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